Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa4503a8f39c289…

MALICIOUS

PDF

54.5 KB Created: 2020-08-25 16:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3071726c52df00cdb10612e179acb38f SHA-1: f8c244e3240193c32e1cf4d88ce3b93f0a684c19 SHA-256: 1aa4503a8f39c289c317db3c27b88ce9935fbeeaf57516c07b4696bd42bbb653
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to ttraff.com, which is a known malicious infrastructure. It also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to distribute further payloads. The document body, though corrupted, contains text related to a 'work experience letter template', indicating a social engineering lure to encourage clicks on the malicious link. No scripts were extracted, but the primary malicious activity is the redirection to a potentially harmful URL.

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=work+experience+letter+template+year+12 In PDF document text
    • http://files.aliciapettit.com/uploads/1/3/1/6/131637876/bapurekelubelovida.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/1/0438/2159/6834/files/stardew_valley_heater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/mojopekenelopatafik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/jebinekudeforujibuxulov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/foviwati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2751/0934/files/lovosabuposajinow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/tulinifineveru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/automatic_control_devices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4914/7803/files/88587768362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/bibliotecas_digitales_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/konurixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/86378811593.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 2

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_off000096a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A5 5332 bytes
SHA-256: 0542614372d2cf4d58706f1c4dbb9bf63b806c3987654e78683c43990b53c719
font_01_sfnt_off0000a8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8CD 10732 bytes
SHA-256: dad470637e511c1f9755dc12e0aff4ecb53d8ee59f2b1989e5b51b0f2aedaae3

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