Malicious PDF — malware analysis report

Static analysis result for SHA-256 9373cafd22d15a38…

MALICIOUS

PDF

46.3 KB Created: 2020-08-11 18:06:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d172d708bfa91f20d5dd3ba4bc1870f SHA-1: a64ad87c52fde38e223c42a90279171df16a7703 SHA-256: 9373cafd22d15a38f9ed248aa03593374058adbbeeb872d4225336d7aa49bb4a
234 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=adverbs+worksheet+pdf'. This indicates the document is designed to lure users into clicking this link, likely leading to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=adverbs+worksheet+pdf In PDF document text
    • http://zikejenil.abundantlivingpsychologicalandcoachingservices.org/uploads/1/3/0/8/130873951/lawesarav.pdfIn PDF document text
    • http://pojiv.patricialaddcaregagallery.com/uploads/1/3/2/7/132710621/wowizos.pdfIn PDF document text
    • http://files.curranbroderick.com/uploads/1/3/1/0/131070291/dorekujomutijo_jedulaguj_soravamurijovat.pdfIn PDF document text
    • http://zisip.pulse-studios.co.uk/uploads/1/3/1/6/131606490/3472429.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/1/0432/3577/0535/files/29011817552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/avalon_catalina_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/55093027625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/taburenume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1077/files/dovoneritiwidebamigelazel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5603/7016/files/5115111328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/suwid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/52057220472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/75905164962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7816/3359/files/psychometric_test_numerical_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8051/5738/files/joel_chadabe_electric_sound.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_off000069f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F9 4868 bytes
SHA-256: 1c595b484ad1fd41dbe760aacd699ec5f62036051217950e7f581f7c508e6d78
font_01_sfnt_off00007aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA4 10444 bytes
SHA-256: 705a1aaf6bc722d027664575873ad1e4bd0a1db07b90c783c258e56071d60444
font_02_sfnt_off00009e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34