Malicious PDF — malware analysis report

Static analysis result for SHA-256 365a5c89969203c2…

MALICIOUS

PDF

37.2 KB Created: 2020-08-17 16:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfb37806c03cc4414f06a951bf6e0b87 SHA-1: 03db1b1123454b8193ec6b4ff6078a58a2ab6ca2 SHA-256: 365a5c89969203c2f0398b34d15a81d77ae2d27c4c8dc93974fee9688eb74d4a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm and a direct link to a redirector, indicating a phishing or malicious content delivery attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK firing confirms the redirection to known malicious infrastructure. The presence of a 'download' lure further supports this. The document body, though heavily obfuscated, contains the URL that leads to the redirector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=grammar+test+for+grade+9+with+answers In PDF document text
    • http://files.glitzync.com/uploads/1/3/2/3/132303205/pisilixotepofi_jipuzovitu.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/1/0430/9119/8112/files/paremixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/duvimuferufisokal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/65935512269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/nolitagofajiteremiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/loxuredewevibafuguju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/bsc_1st_year_chemistry_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4507/6647/files/79891825099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4351/4518/files/catalogo_avon_campaa_12_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8694/5181/files/30510474106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/xujixidemov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/buddhism_history_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9786/8712/files/zosexirodasopiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/46345650520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8689/5522/files/causes_of_adverse_drug_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/how_to_read_the_akashic_records_book.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 4

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_off0000507d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x507D 5568 bytes
SHA-256: 92af73db1ceab87541c636855cf245157ad97272b73ecaa3dacd0ae58459999d
font_01_sfnt_off0000635a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 10864 bytes
SHA-256: 4fbe1b0012ea5cef3332f8991b2471a4d68788403fc4d46d13969c560691e2c7

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