Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf9011e281c2344…

MALICIOUS

PDF

46.8 KB Created: 2020-08-06 22:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70f330675cb3b27ef6a3e806d11e38c9 SHA-1: 27504aabd733cfba992f3b8191d2e3f51bb728f7 SHA-256: caf9011e281c23443018da12c5eddf39b735737716c9824d24a3a3bb37996c13
234 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'keto meal plan pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.com/pify?keyword=easy+keto+meal+plan+pdf In PDF document text
    • http://files.supportiveconceptionssurrogacy.com/uploads/1/3/1/4/131409909/954939c1cd3ced.pdfIn PDF document text
    • http://files.desertpointkennels.com/uploads/1/3/1/6/131606140/jejenag.pdfIn PDF document text
    • http://files.littleleafflutestore.com/uploads/1/3/0/9/130969798/4974598.pdfIn PDF document text
    • http://files.ranchodelriosaddlebreds.com/uploads/1/3/1/3/131398250/5972277.pdfIn PDF document text
    • http://gemag.freighthouseconsign.com/uploads/1/3/1/4/131482975/9877497.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/1/0433/0687/7080/files/22700630349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/zaliraxinatewaxidugeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/dedunuzevedajesejipaxadif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6550/8002/files/favumopapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/osrs_balloon_transport.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2506/files/all_quiet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/gufisiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/22901157293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/fuerzas_intermoleculares_del_agua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5614/files/viravigejebeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9648/files/56007080450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3535/files/how_to_unzip_a_file_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/gokerolefavojowado.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000791e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 5212 bytes
SHA-256: 47157069b7b05ce16322d75fdbb177d9677281ae841f29cb41eaddc49c04fcbd
font_01_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 10292 bytes
SHA-256: b96be3eb12496b592e694b872ec57b98c81cddbe5b9237bd3436fa506a4c74d2