Malicious PDF — malware analysis report

Static analysis result for SHA-256 341115b00879bcac…

MALICIOUS

PDF

68.3 KB Created: 2020-08-22 06:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 995f4d10ff8419c2a152dcd1ea8a6f4f SHA-1: 6eab4c125c5dc218b584cc424a3b1eefb1bb63ef SHA-256: 341115b00879bcac351e6888b2f3b3adbc56faa77dcf452f9509ef0d4ab26a36
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links pointing to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. The presence of numerous links to external PDFs, including benign ones, suggests an attempt to obscure the malicious intent and potentially engage in SEO manipulation for phishing. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=active+directory+services+pdf In PDF document text
    • http://files.pnwbumblebeeatlas.org/uploads/1/3/1/4/131452824/bajunifeba_risexenose_rifilegofedupo_begugitap.pdfIn PDF document text
    • http://files.spiritwickcandleco.com/uploads/1/3/0/7/130775002/fewututebax.pdfIn PDF document text
    • http://files.anabelarts.com/uploads/1/3/1/4/131438539/7017718.pdfIn PDF document text
    • http://files.kumarivalentine.com/uploads/1/3/0/8/130874237/vovimiloxale_bapupiruz_wizati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8073/2062/files/happy_birthday_brother_song_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/28891380092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/40772708886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/l_anti_oedipe_capitalisme_et_schizophrnie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/robedapizoradizol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72645751706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/yamaha_cp-_30.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8906/0259/files/blouse_cutting_and_stitching_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6519/1073/files/infosys_campus_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/tufasevenog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/84713817812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/pugevabuwabusorutaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/basic_physics_formulas_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0813/files/glossaire_comptable.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CA 3072 bytes
SHA-256: 5972c2adcc6ffe26179ac9c3dac37227c6c0043717ff054ab0497952532324a7
font_01_sfnt_off0000bcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC4 4740 bytes
SHA-256: eb002cd3fcaacddcedfebf4b20cdfe714520879a29ece684941b0882a1bb2e03
font_02_sfnt_off0000cd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD00 12472 bytes
SHA-256: 75d9182eaecd2f9e5efbbdf11695390a62d0ef5acff0bfbe278a8624f6578df6
font_03_sfnt_off0000f57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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