Malicious PDF — malware analysis report

Static analysis result for SHA-256 158049c18d7604b4…

MALICIOUS

PDF

57.9 KB Created: 2020-08-20 23:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b97932e49b018abed36f77fd035d0320 SHA-1: 6b66e93f8d3a1320738c9339a3bd036eaf1d113b SHA-256: 158049c18d7604b4fe840fde00785344c077c98f03848a099dead40cadcd9f07
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The primary redirector URL is 'https://ttraff.ru/pify?keyword=simple+blackjack+cheat+sheet', which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful content, likely for phishing or malware distribution.

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=simple+blackjack+cheat+sheet In PDF document text
    • http://zenivan.trailbalzingamstaffs.net/uploads/1/3/0/7/130775052/d45d62119e8.pdfIn PDF document text
    • http://files.ipmsorlando.com/uploads/1/3/1/3/131384777/remizabigem.pdfIn PDF document text
    • http://files.westernsafetyservice.com/uploads/1/3/1/1/131163777/xubivevuxibewi-tosaseb-judane.pdfIn PDF document text
    • http://files.plaincommunitychurch.com/uploads/1/3/2/3/132302999/589ecb5.pdfIn PDF document text
    • http://files.imajicatheatrecompany.co.uk/uploads/1/3/0/7/130775543/sapidovomoxixop-mizuxa-rorekineluwukim-laguwa.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/1/0428/9203/4211/files/arvind_mills_annual_report_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/58747777186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2096/8358/files/80436295962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3708/files/sonazesexepesawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1062/files/setefavutawesupifezive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerivavegexem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1116/1768/files/86627424807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ledoviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/bilog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/xopegikirezolog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/noxipumoratopasiragulopi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8056 5460 bytes
SHA-256: 9de497db5cde79d7e1b5d3be0a7a6537b8bbe3f0572a66e12214ac529c2ce51a
font_01_sfnt_off000092c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C0 15016 bytes
SHA-256: f323fee8cec283b496ece8aff36aff10c4f54d453a0559483ec6bdfb55449cea
font_02_sfnt_off0000c15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC15C 16448 bytes
SHA-256: 4d0b7fceb6e0b8544dba10d314310d86ee7e0ac375a8e3b5fd915ca5fa71995c