Malicious PDF — malware analysis report

Static analysis result for SHA-256 195589d13ce105dd…

MALICIOUS

PDF

55.8 KB Created: 2020-08-14 01:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c8ee7b3050adaed9ddab1a92183864e SHA-1: 161116f0a08e3e3ce3e530b211df2b9229eb67d0 SHA-256: 195589d13ce105dd24684854c298355d4999d2310cbb26259459e5d5095926b8
234 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 are identified as SEO redirectors or potentially malicious. The document body text, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=administrative+procedures+act+pdf', which is flagged as a malicious redirector. This suggests the document is designed to trick users into clicking links that lead to further malicious content or downloads, likely as part of a phishing or malware distribution campaign.

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.
  • 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.ru/pify?keyword=administrative+procedures+act+pdf In PDF document text
    • http://files.equestrianeliteatapplejackfarm.com/uploads/1/3/1/4/131453725/dcaa468ae5982f.pdfIn PDF document text
    • http://gufebi.adventurersoutpost.com/uploads/1/3/1/8/131871674/jakulogebimebugi.pdfIn PDF document text
    • http://files.mjearthworks.com/uploads/1/3/1/3/131380295/4176383.pdfIn PDF document text
    • http://files.mendesdacosta.com/uploads/1/3/1/4/131454696/a4a268ab4a5.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/1/0431/0351/8882/files/brassage_genetique_cours_terminale_s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/wasulevijamowetelewowite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/lanajoguxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/17272750469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/16833112134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4236/0744/files/9481654664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/vokunikexamol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/vafanopujijixaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/algebra_2_prentice_hall_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9196/7652/files/variromurux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/87247356492.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB6 5200 bytes
SHA-256: 8f9d997d334fcb1d10acc838d5bdc137db0d792e172771c153ba04fc611e3e0c
font_01_sfnt_off0000a04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA04B 10508 bytes
SHA-256: dd3703bcc972774eb42f5778d2e0aa0fbf616e3180218df7f9d22d260f73f7ab
font_02_sfnt_off0000c438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC438 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378