Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6edb50a4fb8a74…

MALICIOUS

PDF

42.3 KB Created: 2020-07-13 00:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 32718de7a250dd1c81b513180482f1c8 SHA-1: 916dda5d927f2d3a408dd0664a5ee3c3b87fc4bc SHA-256: 5a6edb50a4fb8a748f62c974dce2b0f6ac7f1f715f6f025ce8c78abd4488360c
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector domains, including 'ttraff.cc', which is flagged as malicious. These links are presented as download opportunities for software like 'Autodata 3.40', indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict.

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=autodata+3.40+fr+utorrent In PDF document text
    • http://files.tetoncountydems.org/uploads/1/3/0/7/130776249/zepotuwuguku.pdfIn PDF document text
    • http://files.theplayfulpalate.com/uploads/1/3/1/3/131379874/3e279.pdfIn PDF document text
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://mewalujatu.files.wordpress.com/2020/07/93988289741.pdfIn PDF document text
    • https://warafij.files.wordpress.com/2020/07/bugajobosojoku.pdfIn PDF document text
    • https://zunoxavememo.files.wordpress.com/2020/07/97577116066.pdfIn PDF document text
    • https://gigifovagipe.files.wordpress.com/2020/07/mokokupakidorefu.pdfIn PDF document text
    • https://busamonavek.files.wordpress.com/2020/06/99745654081.pdfIn PDF document text
    • https://jejiwivu.files.wordpress.com/2020/06/toxufir.pdfIn PDF document text
    • https://mameloga.files.wordpress.com/2020/06/42974377467.pdfIn PDF document text
    • https://nuvosunogad.files.wordpress.com/2020/06/66729466100.pdfIn PDF document text
    • https://wisixabapux.files.wordpress.com/2020/07/72809999338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/78119570512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/71882252479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/pegajowuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/mekopajipaputusa.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F3 4940 bytes
SHA-256: fedde6cea36e8f634efd4896ba48ccc3439db1a2f1f10d380aed9062bcd336a9
font_01_sfnt_off000078ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CE 10208 bytes
SHA-256: fa4560812338954f1242331d04d3fcf03cc4fbd645dc368bd5270d07c561d5e0

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