Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7fbb4e3c742033…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 18:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6aaa45f5fafd49b9dae55aa72a80ad5c SHA-1: 77a1ed5ea75b259ba2618ba151260e67e47751b6 SHA-256: 1d7fbb4e3c74203335bb3c045c598ef20ad072530f420ec780fdf88d99dd7b1c
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector (ttraff.cc). This redirector then leads to a PDF hosted on Shopify, which is part of a larger link farm. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary mechanism for delivering a malicious payload or leading the user to a phishing site. The presence of a link farm further indicates an attempt to manipulate search engine results or distribute content broadly.

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=facebook+event+cover+photo+size+template In PDF document text
    • http://files.reefrunnergear.com/uploads/1/3/0/8/130813866/wunizakinawu.pdfIn PDF document text
    • http://files.nathingjess.com/uploads/1/3/0/8/130813448/tatutogisapudorexoz.pdfIn PDF document text
    • http://files.randolphcountycd.com/uploads/1/3/0/7/130739850/1042142.pdfIn PDF document text
    • http://files.cardiffnailsandbeauty.com/uploads/1/3/0/7/130775392/tuseforusaxiriwosa.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/1/0437/2883/0632/files/google_adwords_fundamentals_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/pesopigoxopejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/keytool._exe_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/30388576688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/curtain_wall_installation_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20931566490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6002/files/10258699011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/bacaan_sholat_fardhu_lengkap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/71640503967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/weather_report_of_haldia_west_bengal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/free_recording_studio_business_plan_sample.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
🗂 Part of campaign: randolphcountycd.com 5 samples

Related samples 4

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_off00006d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 5444 bytes
SHA-256: 775be814dab29a3b074d81b023de73047a0e3aefa3e7b1ebd140ad9463891cc7
font_01_sfnt_off00007fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD9 10212 bytes
SHA-256: ed04ea567b642f16022420c72954fdbcd2bbfa072a72a26d7893ebc527a3d79d

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