Malicious PDF — malware analysis report

Static analysis result for SHA-256 598ae932abd6c4bf…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 04:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7acaed62ecbdb345f9cd0f2513d42f6c SHA-1: 8e041ca9388aa1277d1a8cec7f3ebdf0ba42eedd SHA-256: 598ae932abd6c4bfb71f33cd4a8a677e9d9be021c7e9c6596faece53cf4639c7
234 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as PDF downloads, which is a common lure for phishing or malware distribution. The primary link redirects through 'ttraff.ru', identified as malicious redirector infrastructure, suggesting an attempt to lead the user to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.ru/pify?keyword=geological+ages+pdf In PDF document text
    • http://files.dancetodaybiz.com/uploads/1/3/1/4/131438808/muruworumavame-bepobuzamewuk.pdfIn PDF document text
    • http://files.cmebenezer.com/uploads/1/3/1/0/131070733/wojapuro-jupenadavekubi-ritokimotuf.pdfIn PDF document text
    • http://files.tryoungcrew144.com/uploads/1/3/1/6/131606069/newapepefoxosa.pdfIn PDF document text
    • http://sarum.chasehillschool.com/uploads/1/3/1/4/131453574/bapigijumewofetedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/mebabisukanajonizexasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/96531302759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/97361596814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/15427341894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/sujowodabenijon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7052/0470/files/7873198550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1402/0507/files/30801882466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/powershell_delete_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/tradutor_alemo_portugus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/ledumewadezasidulido.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/nosuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/62826285512.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
    • https://cdn.shopify.com/s/files/1In macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: flywithlevi.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 4860 bytes
SHA-256: 6feb3c0524138583fc86cbffd6525c120b0c89fc31e97735dfa08e7efe88e0e9
font_01_sfnt_off0000729f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729F 10004 bytes
SHA-256: 5663c3588a6e7357b890fee6d7fad233b2c27c4a67adaaa67eb1bdfdb98b5166
font_02_sfnt_off000094d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378