Malicious PDF — malware analysis report

Static analysis result for SHA-256 135dde11c46764aa…

MALICIOUS

PDF

38.0 KB Created: 2020-08-22 13:07:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 524db32d1e14669ad64bf085d4ad907c SHA-1: 4338430b9db1210840807de6270d01085b2db6ce SHA-256: 135dde11c46764aab0a5474e8c4bb8559fe6dc6f92461b99a6a51fb88eda27b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=apollo+100+joy+sheet+music'. This redirector is likely used to obscure the final malicious destination, aiming to trick users into downloading further malware or engaging in phishing. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic to increase visibility.

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=apollo+100+joy+sheet+music In PDF document text
    • http://files.illlaladesigns.com/uploads/1/3/0/7/130740625/94f3e9ddfc.pdfIn PDF document text
    • http://filex.adelaide-brushfencing.com.au/uploads/1/3/1/3/131381518/zajemosizuwu_xipefuxejalaz.pdfIn PDF document text
    • http://files.julietzanniceramics.com/uploads/1/3/0/7/130739212/8487808.pdfIn PDF document text
    • http://kunusop.pofarmersmarket.com/uploads/1/3/2/7/132712286/kopomujuwal.pdfIn PDF document text
    • http://files.lawtonacademyrobotics.com/uploads/1/3/1/6/131637016/4885668.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/1/0433/4619/8683/files/2125107440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/38408472845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/apprendre_l_anglais_grammaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ketotojugidumirazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/drill_sergeant_modules_army_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/gejazebopuzewufuxipux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/29773465823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/rowesixevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/43612045397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39086675177.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 8

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_off00005793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5793 5228 bytes
SHA-256: a9eb115288b956c71ff398b8370cc2edc273bbe1ab080b96764b43f433a8a5b6
font_01_sfnt_off00006956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 9956 bytes
SHA-256: 975aaedff0c1230f70bacdc6fa8d939bde5870c5faeef9ced5fbf894be345802

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