Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1fc1d24ce30420…

MALICIOUS

PDF

41.5 KB Created: 2020-08-12 12:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f751cf6991db8a7a5681575a1e2395ad SHA-1: a30318a834092d9509fb1681c9fea808eb477630 SHA-256: 0a1fc1d24ce304209d591ba16ac851eaad26959dda6243da16b9c9494107c35d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the primary redirector URL. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/wb?keyword=evaluatepharma%20world%20preview%202019%20outlook%20to%202024%20pdf In PDF document text
    • http://sixoliwez.twrcma.com/uploads/1/3/0/8/130814310/98b15d38583f.pdfIn PDF document text
    • http://files.musicalinstrumentswholesale.com/uploads/1/3/2/7/132740805/kevapota_sojujubu_ribupive_tiwulot.pdfIn PDF document text
    • http://buzepe.arunnersmindset.com/uploads/1/3/1/4/131438096/venuwi-beviwojapig-ketujeze-nopetim.pdfIn PDF document text
    • http://files.northgeorgiadaylilysociety.com/uploads/1/3/1/0/131071019/ripokiliro.pdfIn PDF document text
    • http://files.luminousmusehealing.com/uploads/1/3/2/8/132815015/kukadilod_metapamoniz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2047/4779/files/macro_sociological_theories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4021/6987/files/ali_baba_and_the_forty_thieves_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/77273325290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/vonaputexofebemugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/xululixeveritiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/rolling_stone_top_500_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6354/0902/files/gufimarasowux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/xoraramekodabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/58303790846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/kubonuwagurosagirik.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F79 5848 bytes
SHA-256: c343ef654824536e5802b9cb7b13dcdf90a4322d8f7b88c28962865f18b418f4
font_01_sfnt_off00007361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 11312 bytes
SHA-256: f223940d609545fa8bc22c1171ada2a64e023d233586113b32f5b438c31abaaa

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