Malicious PDF — malware analysis report

Static analysis result for SHA-256 73707387395adb79…

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 19:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72d1d484770a3bfaaadc50e31b1031a8 SHA-1: 6a94463db5c3ca27e00c9bef9c0d0106b1f506fc SHA-256: 73707387395adb792910a9c40273b204678a725e6d750cb452303e002d464737
194 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links, including one pointing to a known malicious redirector at `https://ttraff.cc/pify?keyword=cctv+maintenance+report+format`. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to distribute payloads.

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.cc/pify?keyword=cctv+maintenance+report+format In PDF document text
    • http://files.heuerhausdds.com/uploads/1/3/1/0/131070317/luzezosugutewomufot.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/1/0435/3101/0199/files/35665905256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5092/4182/files/64478594085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/bernoulli_s_equation_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/m._yahoo._com_tsrc_samsungbm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3364/7525/files/rotevadebavuropof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/76086478396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/anestesia_epidural_contraindicaciones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0498/files/kisobowaxofupeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8748/7395/files/xizamegivadorigamatav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/7264772762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8138/8452/files/category_management_in_purchasing_download.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 1

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_off00005c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7D 4916 bytes
SHA-256: 19927b52f75ee459fd508ca51dee94f43d4bd1b72634a050764a602abc76f97e
font_01_sfnt_off00006d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1B 14540 bytes
SHA-256: 8a8e07dac33796f15bab2c8fcc14c897ee86116148ab5742acb752f67c6e22eb

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