Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4080da2ba7e7a6b…

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 16:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 55735b53d21dce3be24384d7d35ead01 SHA-1: ec4d2f6645bd015a07a14cc290265be6cf810763 SHA-256: c4080da2ba7e7a6b80bf3c902196f860de4e8f613d5143ee175952dc82c4818f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=soundcloud++ios+9'. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution. The presence of a large number of external PDF links also indicates a link farm strategy, potentially for SEO manipulation or to host further malicious content.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.cc/pify?keyword=soundcloud++ios+9 In PDF document text
    • http://files.grassvolleyball.ca/uploads/1/3/1/4/131453429/xobivujukufuko.pdfIn PDF document text
    • http://files.royaleorchids.com.au/uploads/1/3/0/8/130815009/fakirexasinixej.pdfIn PDF document text
    • http://files.merchantsmrkt.com/uploads/1/3/1/3/131398547/midawakebaz_zataxonafikiza_lelixilebotaxo.pdfIn PDF document text
    • http://files.banchoryeastchurch.com/uploads/1/3/2/7/132710661/dd2e8307.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/1/0435/5329/2440/files/68187105806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/59194416535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/89260098253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/sudo_etc_init_d_vboxdrv_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8311/2341/files/34233319123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9954/3970/files/sandeep_garg_accountancy_class_12_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/duzadorodedikudixil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/punep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2952/7709/files/7822067293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/cash_payment_voucher_template_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/sinaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5330/8314/files/excel_vba_userform_combobox_vlookup.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7326 4884 bytes
SHA-256: 78583147e5e4c0daa2bdecf7e90fb03b734d1c8484ae047613c5b01aef250515
font_01_sfnt_off000083c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C5 10616 bytes
SHA-256: bafc7d5cbac24ff53ec7a07f3f63410cc1edc7cd96ed68c0997443e6b4eeb56e

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