Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1a2630ad2b74a7…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 11:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 464498657834656df13d5702221c5fa5 SHA-1: f0a141de5acd8b920a7e6577baeb2ab6a2d1a54a SHA-256: df1a2630ad2b74a72704dc3669734f3bb9dede41f201f5972e805c5143f290ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file was identified as malicious due to its inclusion of a link farm, a common technique for SEO poisoning and redirecting users to malicious sites. The primary malicious URL, https://ttraff.ru/pify?keyword=rubber+sheet+for+baby+bath, is a known redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting an attempt to lure the user to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection 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=rubber+sheet+for+baby+bath In PDF document text
    • http://files.journeyofmyheart.org/uploads/1/3/1/4/131453605/9285006.pdfIn PDF document text
    • http://files.hollyspetandequinecare.com/uploads/1/3/2/6/132696351/gewutubujabelu.pdfIn PDF document text
    • http://files.ccadt.org/uploads/1/3/1/4/131438056/1511072.pdfIn PDF document text
    • http://files.asiaticofusion.net/uploads/1/3/1/4/131406592/5362764.pdfIn PDF document text
    • http://files.capturingmilliseconds.com/uploads/1/3/0/8/130814674/doxazawam_gujufi_sezedamif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/72983105277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5624/1557/files/pufixopid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6161/5519/files/degesamuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8404/2655/files/3554286281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/tenancy_agreement_sample_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/lagebidigona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/97296905174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/26805605207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/beautiful_disaster_series_free_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
🗂 Part of campaign: asiaticofusion.net 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7121 4800 bytes
SHA-256: 59c7cdffec56eb068bfdbdb9afc22c7d4ebd6ae9e24126133471342e057b7a2f
font_01_sfnt_off00008191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 10344 bytes
SHA-256: 72e9a999e54592e976cf52520d9f96bacc44fdd24b06958f8288c4efbab6b3f4
font_02_sfnt_off0000a4e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71