Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa25a4027a6be7c…

MALICIOUS

PDF

58.1 KB Created: 2020-08-14 00:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8bd535bf964d762113fec30fc1f3c79 SHA-1: 8673df5991d704f1c6e2b1611a005cdc9bd2635c SHA-256: baa25a4027a6be7c8eb69834ebdef661f5e3292d8f96d98b3cd43f762b50fec2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious URL identified is https://ttraff.com/pify?keyword=admob+developer+android, which is likely used to redirect users to further malicious content. The presence of numerous links suggests a link farm or a phishing attempt to drive traffic to malicious sites.

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=admob+developer+android In PDF document text
    • http://files.citiesbysara.com/uploads/1/3/0/7/130739444/34b362eb3ce75.pdfIn PDF document text
    • http://files.sofafoundation.org/uploads/1/3/1/3/131384127/8503099.pdfIn PDF document text
    • http://dupigu.heroinetheplay.com/uploads/1/3/0/9/130969873/rovome_kukimesak.pdfIn PDF document text
    • http://files.fashionbysitaramysore.com/uploads/1/3/1/4/131407361/mizoxumixemufiworux.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/1/0429/9302/5183/files/free_postal_exam_473_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/wetudowufewulinozepiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/55382888925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/activities_of_daily_living_roper_logan_and_tierney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/managing_for_results_peter_drucker_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/55230975990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/84996518388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/82223793973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/preschool_phonics_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1724/6632/files/sibimunuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/36957006876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/break_from_toronto_mp3.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ac52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAC52 26732 bytes
SHA-256: 183bf0d6b52e4bcdd951b728a312472f5ff0b769ab4c3a07e7b8a8507281d2a8
font_00_sfnt_off0000755b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755B 5116 bytes
SHA-256: d4574a5f5176b82277832c740b7a78b72b921733d5c08e000ee226c943c131f0
font_01_sfnt_off000086ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AC 10908 bytes
SHA-256: ba9bcf6d585e6835bc0e578e981fedd6580a86ece13d9804ef095bdce295388d