Malicious PDF — malware analysis report

Static analysis result for SHA-256 a916db040a7d873c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 23:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e9b9a07f6c589a3b737b5c09ce74a2e SHA-1: aed9afed230f10d8ec2025b478eb9402db2a4740 SHA-256: a916db040a7d873c45d73bba9596679b589b5a708195a987ac17ee60779e5672
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the text 'how to be a good speaker pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself is used to host and redirect to malicious content.

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.com/pify?keyword=how+to+be+a+good+speaker+pdf In PDF document text
    • http://files.fruitageofthefield.com/uploads/1/3/1/0/131071145/borolafed_vumusoxav_kigodusixulome.pdfIn PDF document text
    • http://files.tennantcreektransport.org/uploads/1/3/1/6/131606289/4232477.pdfIn PDF document text
    • http://files.mseastsclass.com/uploads/1/3/0/8/130814831/setubaruk.pdfIn PDF document text
    • http://files.photographybyjamiec.com/uploads/1/3/2/8/132815206/zifilavanelo.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/1/0430/4306/1913/files/pejabozexazamemusefajojej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/ratemajosisog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/zitowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/boporifilubikagej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7563/files/estilos_de_aprendizaje_visual_auditivo_kinestesico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/dobefinomirikugike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/97891124247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/3978118488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/telugu_songs_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/jaguxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/59579162026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/35980765455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6410/6901/files/dowifimemofuvusugedem.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 6

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_off00006b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B41 5436 bytes
SHA-256: fa4277f1a5919febb45ce69a6c8247dd357fcaf748834d07778ef2dced19885f
font_01_sfnt_off00007ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDB 10316 bytes
SHA-256: 11db27e70bba65e92e701cb9f48489c1d0b25b8ab677514af23a0897d0aa02c4

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