Malicious PDF — malware analysis report

Static analysis result for SHA-256 37eef11e6e694a97…

MALICIOUS

PDF

41.6 KB Created: 2020-08-20 13:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8a9cc189e104742eac8009277308331 SHA-1: 99a49d88c66b28e6d16d99c61d609074368da377 SHA-256: 37eef11e6e694a97e1ec4a48b1d2b63bff882cccbc1a4071cbd126059bf9316f
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=audacity+mac++os+x. This suggests the document is designed as a link farm to obscure the ultimate malicious destination, likely for phishing or malware delivery.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=audacity+mac++os+x In PDF document text
    • http://files.mattarelloaway.com/uploads/1/3/0/7/130739020/jexepavugeg_basejik_retetapi.pdfIn PDF document text
    • http://files.huimalamaokekai.org/uploads/1/3/1/4/131407691/jojotewomugunadumer.pdfIn PDF document text
    • http://pesil.jbkirklanddesign.com/uploads/1/3/0/7/130739693/1addb4a352be.pdfIn PDF document text
    • http://files.widhalmcustomhomes.com/uploads/1/3/1/3/131383934/8f19ef67.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/1/0432/2908/5859/files/download_phn_mm_chuyn_t_sang_file_nh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1001/5910/files/fuwoxoxege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/kuxobuzapiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/video_editor_fx_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8802/7555/files/75780116977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/gijogupamurawume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8783/3762/files/polezopasuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/61614159127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/esc_guidelines_pulmonary_embolism_2014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/kebulazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/sipojamefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/dovevuvida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0575/0946/files/how_to_use_scanner_in_java.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
stream_005_off000076e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x76E0 10084 bytes
SHA-256: 8c2aa6613c0c7b23e5b9989b1475b9792ef92e7e3263762f481c8b22aed714fe
font_00_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 5116 bytes
SHA-256: 5d2b8d9c12cdf482802f473b4c700febf343d062a321ba26a2e48db661345948

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