Malicious PDF — malware analysis report

Static analysis result for SHA-256 4492bd61c8f40045…

MALICIOUS

PDF

137.8 KB Created: 2020-07-31 06:49:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53daee399832e227cec9a528598cf3cd SHA-1: f8e7540ae98eb7e71689f0ceb515b22b9de6adf9 SHA-256: 4492bd61c8f40045f09f927d63e1fcd7fca8f6fa3043083a792d756b847dd071
234 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-themed lures. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body contains garbled text but the presence of 'Bayer acquires monsanto pdf' suggests a lure for information. The redirector link is the highest priority IOC.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.cc/pify?keyword=bayer+acquires+monsanto+pdf In PDF document text
    • http://files.muncasterfinancial.com/uploads/1/3/1/4/131453713/44f880f75e4c20.pdfIn PDF document text
    • http://files.benjamincraig.org/uploads/1/3/2/6/132681156/2560000.pdfIn PDF document text
    • http://files.restorerepairmissionaryoutreach.org/uploads/1/3/1/8/131871970/c0109b73104292.pdfIn PDF document text
    • http://files.bethelpenclawdd.com/uploads/1/3/2/6/132683069/b230a64bb7eb.pdfIn PDF document text
    • http://files.circleoffriendssg.com/uploads/1/3/0/8/130813592/wosar_ligofebarivot_lagujoxitur_tawonoxisod.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/1/0440/7564/7128/files/nonusatog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/63402551059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2827/3569/files/88726865534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/66671651436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/21774801319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/wexajonuvamodisituxowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/kerulovalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/wugabovubafesapuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/21755299993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/rofogodisinegitovuj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0001b0cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0CB 7044 bytes
SHA-256: 70779bbfc53efd1490c39acb573bc345a1f587a0af8f6b8d6fdf453e8e74441e
font_01_sfnt_off0001c8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C8A1 5428 bytes
SHA-256: 0ce45703543d5128bd82a55158ba3b3d427faa7b4f0719feddf8dbb610375fa3
font_02_sfnt_off0001db03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB03 11712 bytes
SHA-256: 30fd3a90c1be690d436ddbb7bdf1d0a66e49fd4e98fcd3e5f1a54818b597d345
font_03_sfnt_off00020313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20313 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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