Malicious PDF — malware analysis report

Static analysis result for SHA-256 44efdb0d6c12482e…

MALICIOUS

PDF

42.1 KB Created: 2020-08-25 23:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10026c84a13f17b7f646f6073590d5f0 SHA-1: 8dc71d3c2859d3e8fb134026935782b740cb9d17 SHA-256: 44efdb0d6c12482efe61f32486d7be9e5385b72db26d78e60f0d6fb61a0a5c7f
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.ru', are highly suspicious and likely serve as the initial lure for a phishing or malware distribution campaign. The document body, though partially corrupted, contains references to the embedded URLs, reinforcing their role in the attack.

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.ru/pify?keyword=romeo+and+juliet+blank+timeline+worksheet In PDF document text
    • http://files.littlesistershop.com/uploads/1/3/0/8/130874050/3596072.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/1/0433/5416/1310/files/73151980867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/jgr_oceans_author_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/99642517444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/developer_options_apk_5._1._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2987/2292/files/romaxuzumize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/31363449190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/6249275129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/88792711885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/82485056260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4243/1395/files/71414218661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6430/files/bedewunaluxope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4497/files/voxekubupiritotewetewokig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9927/3882/files/goldfinger_99_red_balloons_lyrics.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_off00006709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6709 5444 bytes
SHA-256: a39cbe2def0253733a4bd23e469e68e29e30c8bfacc02a7e8e51478bb6c8ab7f
font_01_sfnt_off0000796a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796A 10024 bytes
SHA-256: 88a864c7bcbb974dc306a0dbe335dab53d08b817f4ed27c6f6600ffffb1f09e4

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