Malicious PDF — malware analysis report

Static analysis result for SHA-256 8118c176c1c893b1…

MALICIOUS

PDF

36.7 KB Created: 2020-10-25 23:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2d8a1082d979a4a5695987732fd86b48 SHA-1: 53465db15d965f0c3cb3c759dd80d453a4b442c9 SHA-256: 8118c176c1c893b1b3b35ff55bb2551c24bc1774e21a90c688610bdad1d9a85f
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as free beading tutorials, which is a common lure for SEO spam and phishing campaigns. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm or SEO manipulation tactic. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/123?keyword=free+beading+tutorials+pdf In PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/7990581.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/6034297.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/1564085.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/laresisif_kigadebokenub_bajutinerid.pdfIn PDF document text
    • https://sofuwikomu.weebly.com/uploads/1/3/4/3/134308783/pekezawinavuzemawal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f87b295e595a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f88cfabf2a56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380863/normal_5f9134661b13e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8cb20be136b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f87a1064aec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f879b3062db7.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/1/0437/1575/6181/files/lake_county_sheriff_tax_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1344/5064/files/cdigo_de_processo_penal_militar_atualizado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6587/1013/files/74356413628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4469/9799/files/2020_ring_alarm_system_monitoring_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9512/8216/files/fear_the_darkness_guide_kill_order.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8720/2971/files/download_nextplus_apk_for_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9838/3545/files/56287635916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/motiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1526/4168/files/wowopudofonikasisaxofoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/97137338879.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_off000049f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49F5 5304 bytes
SHA-256: 9ad392696076cfcfb049756de7b6cde77d516b251755338db7eb9bbd30454670
font_01_sfnt_off00005bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFD 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 9636 bytes
SHA-256: ede19bcc556568f59456d704b7c1076270650f98ad9a1973290f5e2d3bb84a38

Open this report in the interactive analyzer, or submit your own file for analysis.