Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99e6575855c2440…

MALICIOUS

PDF

49.6 KB Created: 2020-08-09 10:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c4751f68f98e12d2f5252d4e14559fc SHA-1: bb25fcafcbd5fa323dcf770f03880a7b26a50b09 SHA-256: f99e6575855c24403b6880cca93c08d30e45787d97f046847fcb24192fca87b1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=askep+atresia+ani+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to PDFs hosted on cdn.shopify.com and other domains. The document body, though partially corrupted, contains the malicious URL, suggesting a lure for users to click and be redirected. No scripts were extracted from this sample.

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=askep+atresia+ani+pdf In PDF document text
    • http://files.viableoptionsphotography.com/uploads/1/3/1/4/131407802/nepugojino_rojanumeve.pdfIn PDF document text
    • http://files.armycadetsofamerica.com/uploads/1/3/1/4/131407281/lijefali_nebegakofewuse_labipukuwof_fulules.pdfIn PDF document text
    • http://fibozu.chrisann-jeff.com/uploads/1/3/1/6/131606289/vurofajit.pdfIn PDF document text
    • http://pikox.northstartxwp.org/uploads/1/3/1/4/131407005/walox-naxavamo-javagowukepe-jarevamize.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0428/9835/8432/files/16946396068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/gipibujisux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/mimikibutagoganemizuvisel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1556/0616/files/dixeliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/ios_6._1._6_jailbreak_no_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/54124130018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/jagolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/83771363593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5761/8850/files/18527893988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/14555280034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/junozafuli.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B98 1976 bytes
SHA-256: 9a18ac78a3ccadaf70aec51f0e48e4188a54585a53069accc7c3258f39704a5c
font_01_sfnt_off000084b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B7 5056 bytes
SHA-256: 5bf5632fd8c915231545061f6537379b01f1a9ef4b4b396d97f157cb032139ef
font_02_sfnt_off000095fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FD 10336 bytes
SHA-256: e25612ceb734bb80153dbcc6bd1f2668b8c381af7a0b47e3c526bad7f1e8c045