Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c44c750e586d2c…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 23:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0c1111b8822781422e8e500481ffd75 SHA-1: d2702345a019cd43a62f7f0084fdc6f31c597ccf SHA-256: 10c44c750e586d2c02524dcb5a0be696c2573aaf4f5a4f9e177ad964620972f2
234 Risk Score

Malware Insights

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

The PDF document contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious SEO redirector. The SE_CLICKFIX heuristic indicates the document likely instructs users to execute commands, a common social engineering tactic to bypass security measures. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=iso+to+usb+bootable+software In PDF document text
    • http://files.jano65.com/uploads/1/3/2/3/132302710/dowokapapaf.pdfIn PDF document text
    • http://files.steamdiscoverylabbeta.com/uploads/1/3/0/7/130776180/depodisigudu-tifaminudalona.pdfIn PDF document text
    • http://files.timepathway.com/uploads/1/3/1/4/131453969/1df19f7f27c.pdfIn PDF document text
    • http://sipapedem.cabinaselshaddai.com/uploads/1/3/1/3/131380284/velopape.pdfIn PDF document text
    • http://nakim.livewellwithkell.com/uploads/1/3/0/7/130775903/wefubemajojaka.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/1/0434/0659/0104/files/74051284207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/zugonabipividafuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/87734984381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/business_intelligence_tools_comparison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6071/7726/files/83474254954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/lilivamazomesukax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/pulisezakazilufokol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/24446232159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/cibc_annual_report_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/0207/9893/files/19734905310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5050/6152/files/63817339218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/tatilupavozumuxirug.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6703 4928 bytes
SHA-256: e3ad43f1437d28c228660d50fabae98dde05b902631d5b4ef768da48836540e4
font_01_sfnt_off000077e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E6 10392 bytes
SHA-256: 465aa713946305d4198af2db911c68b94f2bc04e06b6f04aa1c18a5c7bce77cf