Malicious PDF — malware analysis report

Static analysis result for SHA-256 62143505546a8b96…

MALICIOUS

PDF

87.2 KB Created: 2020-10-26 13:10:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fac6a964d77f8a80fb0c19cfeb204e5d SHA-1: 97145f192b1bcd4cff9296ca3a6453cd2d32afe6 SHA-256: 62143505546a8b96c645c1d2b63379c71c1e2b492bbfe89cbba65d288fd70b04
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ggtraff.ru, which is likely used to host phishing lures or malware. The document also exhibits characteristics of an SEO link farm, with numerous links to PDFs hosted on Shopify, suggesting an attempt to manipulate search engine rankings for malicious purposes. No scripts were extracted, but the presence of malicious links and the SEO link farm pattern indicate a phishing or malware distribution attempt.

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://ggtraff.ru/aws?keyword=deconstructive+criticism+pdf In PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/revinarimenapejigeti.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/kakapuritaluw-vuvizujenogafi-ralubevipawege.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/1/0503/3879/1582/files/japefige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6597/5199/files/kokelanibipofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7390/4545/files/fazasomumabovitekimade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8153/8975/files/44729756827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2417/7093/files/pokerstars_app_android_real_money.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6424/8470/files/fisiopatologia_da_osteoporose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1063/2098/files/pavuwoxilavafidabib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7946/1785/files/engrapadora_industrial_manual_para_tapiceria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/25520948530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a2fdbb0-d15e-4288-a3b4-542a1f50e1a6/tisoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f93bafb-c0a0-4444-b1cc-b57052f5a504/62348743159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c319843b-f61e-4b2b-9d0b-9eb30c9ad45d/stihl_ms460_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb9786d6-7713-4735-aeb6-1730a94bc5cd/33839849235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c448c2d-a28e-41f2-8c81-a0b1fcceacea/mazugijemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73124ddc-f07f-4550-bf62-579ff70990c8/rixareridezar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de235cb-cc96-4448-bce9-96fbe040699d/mexegenetazozoduwasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef61831-4c52-4b5a-ac42-09310193d8d3/witekugezuwirunubabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c0e7d6-6134-4d45-ab1c-0cebad1c90b2/wendy_s_allergy_menu.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_off0001169c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169C 5120 bytes
SHA-256: ce069263d564e06957ae26697973d470a993f2092b48aff4860b80a7d87b54a2
font_01_sfnt_off000127f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127F2 12168 bytes
SHA-256: 1fc71ff5d089e989ce0c73d594825e266357af4d3751282945c4bdabece8f9d4