Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d16147d9273739c…

MALICIOUS

PDF

53.7 KB Created: 2020-08-21 15:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7bd74a643c8a09d537bba26aed1f030a SHA-1: 101aee3e5ec8a6da5304c1c9ddd449e023ec5a64 SHA-256: 2d16147d9273739c56ae6622bbacac8a2ada5c36c1fb01f4f895360046bd925d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link farm and a direct link to a known malicious redirector, ttraff.com, which is used to lure users with the pretext of downloading 'Airdroid app apk free'. The document also contains a QR code lure, though this is less definitive. The primary attack vector appears to be social engineering via a malicious link embedded within the 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=airdroid+app+apk+free In PDF document text
    • http://nuximoj.gabypruittphotography.net/uploads/1/3/1/3/131383548/72f65f702806b.pdfIn PDF document text
    • http://matowepul.soundofsilver.net/uploads/1/3/1/1/131164250/wekuv_xizalemeg_pogugunuxada.pdfIn PDF document text
    • http://files.myenchantedlocket.com/uploads/1/3/1/4/131437736/wifufitumemot.pdfIn PDF document text
    • http://kazixusu.janeadventure.com/uploads/1/3/0/9/130969130/nesupejafix-mazebamezix.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/1/0427/7967/2735/files/xuwugewuxoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/tokajenebinogafezudesepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/kufirazip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/duwew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/91428497315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/35675876874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2117/0850/files/vesoduwemamuran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/1919877781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/attendance_sheet_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0767/1448/files/strategic_thinking_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/mixedizanebozatugejez.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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8468 4652 bytes
SHA-256: ccaadca761e3a41752fcef438c26165c0538b9046df3dc033f60bd8ae0227b4f
font_01_sfnt_off000094b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B6 4880 bytes
SHA-256: e5b7d096622815ce114f36cba4fd68bba73bfd822fbf30c821682c68751669e7
font_02_sfnt_off0000a562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA562 10508 bytes
SHA-256: e8e6b312ef904a1aa4e9e1ed0cb85d53b66bf3e09db7693936b961006cfc2c46

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