Malicious PDF — malware analysis report

Static analysis result for SHA-256 3797b51fe452e447…

MALICIOUS

PDF

58.1 KB Created: 2020-08-09 22:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fa48f7a257eb3a5796ad8dcea534642 SHA-1: efab772be7a031df8f2c7211cd8aa3d4ff920d5e SHA-256: 3797b51fe452e447c5a7ad8789df40a9142e0d45d9cbe51d5fecf03216db41d4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=sql+developer+interview+questions+for+4+years+experience+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and appears to be a lure for SQL developer interview questions. The primary intent is to redirect the user to malicious infrastructure.

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.com/pify?keyword=sql+developer+interview+questions+for+4+years+experience+pdf In PDF document text
    • http://files.wardscreekpto.com/uploads/1/3/0/8/130873958/881354.pdfIn PDF document text
    • http://files.alexandersheltonyoga.org/uploads/1/3/1/3/131379530/sabifu_zitasaj.pdfIn PDF document text
    • http://files.annakjacobson.com/uploads/1/3/1/6/131637774/tizot.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/1/0438/0708/0610/files/rafulitatuligilumugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/sufifuvapoxitusuxezis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/paramore_misguided_ghost.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2197/6220/files/79779953754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/26552872734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/rumokumamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0398/1463/files/circulatory_system_labeling_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/axiom_verge_passcode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0971/files/piwutir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/tusazojezedur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/aporofobia_adela_cortina_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/69145298469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/46620074582.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_off00009612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9612 5668 bytes
SHA-256: 3c821e1609d3e099cce542e6b6abbe70a603d65cd016994aa122c85970e415f2
font_01_sfnt_off0000a98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA98E 10428 bytes
SHA-256: 7b823ec83ba3e54e5f7be5520ad4657d7d36131d39fb79024bcacfb488179047
font_02_sfnt_off0000cd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD06 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378