Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5bb2982eee0bb0…

MALICIOUS

PDF

118.0 KB Created: 2020-10-27 11:35:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 72bba6ad6fa0a709565edfb1ec4184e0 SHA-1: 19bb0d2b2350e8cde555689598ed34d3a0239cab SHA-256: 8c5bb2982eee0bb09ea4f8ecda9dfe5e0fd020dc7135630598118fafadabb94d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a significant number of embedded links, with heuristics indicating a link farm and a redirector to malicious infrastructure. One of the primary links points to 'ggtraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it is a key component of the attack. The presence of numerous links, many pointing to benign Shopify URLs but likely serving as a cover for malicious ones, indicates a probable phishing or malware distribution attempt.

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://ggtraff.ru/strik?keyword=purple+cat+from+sailor+moon In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/biriwixof_rilotefam.pdfIn PDF document text
    • https://garisufusomepis.weebly.com/uploads/1/3/0/7/130740000/xawajatutegaxil.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/9208696.pdfIn PDF document text
    • https://fabedajigunud.weebly.com/uploads/1/3/4/4/134480588/kigarajizinu_vodijemogire_kogulaki.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/f170af.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/1/0437/9928/1821/files/touch_vpn_apk_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0134/6711/files/30537797231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3042/7817/files/wameteko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa1d92d4-6e84-4117-9cdf-3f54c52a679c/18575625560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3162/5882/files/74452727579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/leponezumizaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8294/0061/files/nonanuzex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8198/4925/files/gisasotoweb.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/best_architecture_books_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/46770949856.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/resufewidojusow.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/sazij.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/pan_africanist_congress_of_azania.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/93767911111.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/jr_hokkaido_map.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_off000171f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171F0 9120 bytes
SHA-256: b63fd6e60a0c34193b4a7e84233eacbe32e73267c477321dc4fd480de0207715
font_01_sfnt_off00018fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FD4 5164 bytes
SHA-256: d8360ed25e5e16f5c78ecf5ba46eb66324009fad568d9c9c2b4d0ffc64607821
font_02_sfnt_off0001a149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A149 12404 bytes
SHA-256: 2df33dce70675313f0b4436c9186f9156fce63ad132599c2ee75f5ed8ee113f1

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