Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b68932b05ce5e7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-09 19:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1cf57ad3af59cc48e2b1b8859088048 SHA-1: 8413be05f22a7db0b7b3d1a83d85b12424229366 SHA-256: 36b68932b05ce5e76f894128ce86991a926564019cda18e84df7d5fa5ca3971f
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.com/pify?keyword=past+simple+irregular+verbs+exercises+pdf', is flagged as malicious and associated with SEO link farms. This suggests a phishing or scam attempt disguised as a document download, likely to lead users to malicious content or further compromise.

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.com/pify?keyword=past+simple+irregular+verbs+exercises+pdf In PDF document text
    • http://gisudawaw.mtoliverunningtofeedthehungry.org/uploads/1/3/1/3/131380213/70f938d.pdfIn PDF document text
    • http://kukisise.greenkordofan.com/uploads/1/3/1/4/131407406/melorewuxakej.pdfIn PDF document text
    • http://files.jurneyvetneuro.com/uploads/1/3/1/3/131383838/vifiwagiz_disesodubux.pdfIn PDF document text
    • http://files.laughingmatterstudios.com/uploads/1/3/0/7/130775665/wegekekiwomegamafup.pdfIn PDF document text
    • http://files.melodywagnerforstate.com/uploads/1/3/2/6/132695321/6140497.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/1/0429/6704/0163/files/lidozovomiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/93914029903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/91897772342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/84652027820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7955/6504/files/24484152553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1617/4237/files/harry_fucks_hermione.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gipal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/keto_grocery_shopping_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6254/8887/files/urbanismo_romano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/shipley_proposal_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/45624787983.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5744 bytes
SHA-256: 9f6e9dc4da0ef364bb5c78e2a41f96fb45b29bd447cc1abeb88a0bf9bff23138
font_01_sfnt_off00005efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 9628 bytes
SHA-256: adb98b48818512c1b61f8b668c6f476c02d82a8f642df0a68b1cc0e9aa1d92e6
font_02_sfnt_off00008017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8017 16060 bytes
SHA-256: 313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c