Malicious PDF — malware analysis report

Static analysis result for SHA-256 88652714b3129e10…

MALICIOUS

PDF

41.8 KB Created: 2020-08-27 18:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a37246f15fda63a46b1a1e7856638ab5 SHA-1: f60eb7a5cf4c618bea9eab7f687e7ac1b41de918 SHA-256: 88652714b3129e10b6582a6ab7251e23f5b8c7b96fe576b6e9a0e34a66f666ce
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which point to a redirector service (ttraff.me) that likely serves malicious content. The presence of a 'download button' lure and ML classification further supports malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading further malicious payloads, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/pify?keyword=envision+math+common+core+reteaching In PDF document text
    • http://files.atkinsonbrassco.com/uploads/1/3/1/4/131437976/3196020.pdfIn PDF document text
    • http://tinanop.aawcphilly.org/uploads/1/3/1/3/131398252/kirado-bitogik.pdfIn PDF document text
    • http://lomos.shepherdsafricanadventure.com/uploads/1/3/1/6/131637814/fevekibufujib.pdfIn PDF document text
    • http://xirim.w-here2stay.org/uploads/1/3/2/6/132682347/4794229.pdfIn PDF document text
    • http://files.moldandwaterdamagespecialistinc.com/uploads/1/3/1/1/131164236/aaedee1cba232ab.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/1/0431/5276/9192/files/34594240391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/vazupekexesunif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1124/3162/files/11483392017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/57133649534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/libro_el_aprendiz_de_brujo_2_pnl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/83996021756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/53416898229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/82726911737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/blue_blue_eyes_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5437/3793/files/63758665117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/79638179614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5999/4014/files/gozadawofopova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/50964868008.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_off000064d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 5200 bytes
SHA-256: 7768ee97cd296da57874e61fcf96570dd86ff4a24bda444d5bc9d981f1a22913
font_01_sfnt_off0000765e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E 10496 bytes
SHA-256: 7d7b0289897c6d50d410aed625db0a2c767796bdf9888077a3b7f480abb11bf6