Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9aa013a31450255…

MALICIOUS

PDF

41.0 KB Created: 2020-08-10 16:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da0e3c8cdc160187641707fe702ec91d SHA-1: b22b43d8cd50def2844acbefcf629c5bcd7fc068 SHA-256: a9aa013a3145025540fa83f1ba75221e6a0d3a4146cd6745481eab1e54237e0a
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious URL identified is ttraff.com, which is likely used to funnel users to further malicious content. The document body appears to be obfuscated or corrupted, preventing a more detailed analysis of its specific lure.

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=riesgo+laboral+definicion+pdf In PDF document text
    • http://files.finaticsportfishing.com/uploads/1/3/2/6/132695694/77d36c74ab30baa.pdfIn PDF document text
    • http://files.jessicatruscott.com/uploads/1/3/1/6/131606035/8328657.pdfIn PDF document text
    • http://files.tucanursing.org/uploads/1/3/2/6/132681322/b764d3bbddd6.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/1/0434/1330/7541/files/networking_commands_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3302/files/47648191607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/32316409392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/ranadusamafumedosig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/9475865735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4712/4135/files/weluzapozunej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/punifasopowojuwinorole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/5544324487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9854/6082/files/50323988044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/89848489375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2594/8072/files/zijuzimibima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/papozezomojup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/97648725211.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 5

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_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 5472 bytes
SHA-256: e94208cde5bec185ca60ad39f40c441d1a10cb3726278ae478a0db5c00d2e1b6
font_01_sfnt_off0000735d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735D 10544 bytes
SHA-256: a755a371d5616a4543da39304cb4f0c71350e2010e238246b200dd26559d4d45

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