Malicious PDF — malware analysis report

Static analysis result for SHA-256 7139747c5b42f651…

MALICIOUS

PDF

55.5 KB Created: 2020-08-29 20:45:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 367cd339c93d44acd2ecee8f7d8c1d19 SHA-1: 879352c1ae9afed1946af2797b0c7cca023c3dfc SHA-256: 7139747c5b42f65137b69f1b69ea76f0ade1fcf58c72ab5d9fa1a6aca65097d4
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a redirector link to known malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting it's a 'travel guide' and includes the malicious URL. This indicates a likely phishing or malware distribution attempt, leveraging a link farm to obscure the final destination.

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/wix?keyword=el+calafate+travel+guide In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9bfe05a77a1b4d5eabd0d05d04a283b4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fe9d8082320a4ceab11390cfd2e64385.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e8506d_96aea3938a7b486cbf5d1bfa6d1d7c7f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8acb103638da477987d634ea67792e25.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1e0f500d713148e38461148786b0980f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8a137896d67c4e77980d30d20b4a3800.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fb642f2e8f87472d92571b067a601cef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3613a9d2513a4ce6bbefef911945bafe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ed537_f2307db817e74ea8bcfa9f9657a2b2f3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2699/6633/files/76828471539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/44375792331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/11714737600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/vinunanuf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f5dee3ed256d4d3ba68fd5e3a17e7059.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/87a178_b5e1831efb0d4f8fb4e00e8358c12d55.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_78933278833e4d14aec1e5388937cc2b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a87f0d5593a7457ca7090e568513af58.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3f859ae14ad842668a2045c447be4da2.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 4692 bytes
SHA-256: f577ebf996628974617855937cdfdef1683b71b307d805627bbe1df0ccfecbd1
font_01_sfnt_off0000862d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862D 10516 bytes
SHA-256: ace26c75636567bbe1f85996854d1c1960bafc27b2a0dd2af447c76c0f7dd0b4
font_02_sfnt_off0000aa2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA2E 17184 bytes
SHA-256: b29db41b9abf1283e5917ed084e385b1300f15a5043abbe2a8d05d7550163896
font_03_sfnt_off0000c26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC26F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2