Malicious PDF — malware analysis report

Static analysis result for SHA-256 177ce738364ff018…

MALICIOUS

PDF

44.6 KB Created: 2020-08-03 07:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8b0babe92a8f7228729f8bd78533c78 SHA-1: 2e478193fe7fb9d402e9c7c17f05e0e8deddd0db SHA-256: 177ce738364ff0181f857bc8fef4aa7c41a67fcec0ac322588f152c8b176ce08
194 Risk Score

Malware Insights

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

This PDF file contains multiple links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.cc'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, many of which are likely part of a link farm designed to attract users searching for software like 'acethinker video downloader'. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed for phishing or distributing unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=acethinker+video+downloader In PDF document text
    • http://files.v23next.com/uploads/1/3/1/3/131381675/2800260.pdfIn PDF document text
    • http://files.skickrocks.com/uploads/1/3/0/9/130969847/latumota-kuwefakeb-dofinowu.pdfIn PDF document text
    • http://files.keenefarmersmarket.com/uploads/1/3/1/4/131407547/3411243.pdfIn PDF document text
    • http://files.baypowerengineeringltd.com/uploads/1/3/1/0/131070688/jesuge.pdfIn PDF document text
    • http://files.sammungai.com/uploads/1/3/0/7/130774990/3ae346a51335d10.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/1/0432/6588/4323/files/jugijoropasixetus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/argent_crusade_tabard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/41901626466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9746/4731/files/17494000707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/fovavoragerojabefori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/zowesidut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/cs_go_config.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9799/0055/files/dobobizizino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/godovanamipererax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/fafaxefadixomubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/sofurelapaluvelexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/gemelijimanasitob.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_off000063c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 4840 bytes
SHA-256: c287d82e690081f5cb8e3aed8b9465070f16729a587bdb02457ff1be0aacf375
font_01_sfnt_off0000742b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 10352 bytes
SHA-256: b342ff2e7193866f6a7f876422c5879c9a74193035d333e6aee8c6e797344c6c
font_02_sfnt_off00009794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9794 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71