Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aeb23c6779857c2…

MALICIOUS

PDF

40.9 KB Created: 2020-08-08 10:39:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e45573cb92d3c301fb4c14a1d52e4489 SHA-1: d2f78e9c3eae872d41a8ecfa2c894b93cbedea01 SHA-256: 5aeb23c6779857c24c94a7684bdcf822f7fce00abce3490aba204da1fef01296
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=argon+welding+process+pdf, which is also flagged by heuristics as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious site under the guise of downloading a PDF.

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=argon+welding+process+pdf In PDF document text
    • http://files.nellasquestinc.org/uploads/1/3/1/6/131606690/vubazomusol_xibokiwip_fopig.pdfIn PDF document text
    • http://files.stbrendansvillage.com/uploads/1/3/2/6/132681812/bifojetuveponodoto.pdfIn PDF document text
    • http://files.gina-myers.org/uploads/1/3/1/4/131406248/tuxojelelideta_lenuken_nuzudemi_kinez.pdfIn PDF document text
    • http://fikulusa.sacramento-processservers.com/uploads/1/3/1/6/131637136/39554ab.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/1/0430/9280/3744/files/cyclops_depth_module_mk2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/sotogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/granny_smith_free_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/gejufufixabuweru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6051/7274/files/sweat_smile_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/sasedanurobevozixigex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/mein_tera_hero_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/dekixuxifopagezozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/13608714438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/jusupagejitunutan.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 3

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_off00006281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6281 5192 bytes
SHA-256: ce56ed41dd4d74517c36a2854d9e0279173060555200c0119e687dbfdef8facf
font_01_sfnt_off00007459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7459 10128 bytes
SHA-256: 7d68b2486df898850539de03c2b133496c09945ea29992496e8d818d21053fa1

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