Malicious PDF — malware analysis report

Static analysis result for SHA-256 136bddd074babb46…

MALICIOUS

PDF

51.7 KB Created: 2020-08-05 04:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cc289cad384b84a35e192b34a1956a8 SHA-1: e01d077c821df8fe58f775ba57641961b42243e9 SHA-256: 136bddd074babb4680e05bcd63ac3b5530a9456bff1d44b259def5380fa76f48
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt to lure users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Ameritrade ira terms of withdrawal pdf' and a suspicious URL, reinforcing the phishing lure. The presence of multiple embedded links and a redirector suggests an attempt to distribute further malicious content or lead users to a credential harvesting page.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=ameritrade+ira+terms+of+withdrawal+pdf In PDF document text
    • http://files.taleford.net/uploads/1/3/1/3/131383297/64ea1708278b5.pdfIn PDF document text
    • http://files.bradleystokejudo.com/uploads/1/3/1/4/131406714/jipulofo.pdfIn PDF document text
    • http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.pdfIn PDF document text
    • http://files.ccsb.danafarberdev.org/uploads/1/3/1/4/131437249/6374087.pdfIn PDF document text
    • http://files.cruisecontroll.org/uploads/1/3/0/7/130740573/dosiki.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/1/0431/2884/8538/files/tourner_dans_le_vide_english_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/sosefukixepax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/tunuravimakasaluxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9402/0000/files/google_chromecast_wallpapers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/lifexevojisedafojevam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/bozutulid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogazuzotefoninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/wapeboluzugepeloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/91062207320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/22134116423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1864/files/83561197096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/tixujeposedalafawo.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD4 5364 bytes
SHA-256: 461e8eeee8ffe5c09f5fcf2f68659e18b6e3ffadf7c37ef2b7440cb7132ce5b6
font_01_sfnt_off00009cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF7 10816 bytes
SHA-256: e1a96482a0d401f3925b57621d1ce88cea4c11441ef145b1116fe0ec2dae1f68