Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a368107e67457d2…

MALICIOUS

PDF

46.2 KB Created: 2020-10-29 08:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2c4cb89abf7159810b2db616fd68b251 SHA-1: 94f2971d73429d325c4a2ca66d6584542d95aac8 SHA-256: 2a368107e67457d21787d116269a721eb0c02dac1107a6564e5028690a6c891b
202 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body and embedded links present a lure related to 'Tron arcade game for sale', aiming to entice users to click through to malicious infrastructure. The presence of a link farm and a redirector URL strongly indicates a malicious intent to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=tron+arcade+game+for+sale In PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/5543708.pdfIn PDF document text
    • https://zazusixalug.weebly.com/uploads/1/3/4/4/134491239/suzipilosafone.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/nipozum.pdfIn PDF document text
    • https://sabitafev.weebly.com/uploads/1/3/4/3/134308069/2291412.pdfIn PDF document text
    • https://zewonawexekuke.weebly.com/uploads/1/3/4/3/134318694/7840365.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/1/0500/7258/4380/files/86289520604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43bb005d-5354-4dfa-9adb-06acbcbaf030/93141980079.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/hernia_inguinal_anatomia_y_fisiologia.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/vetibusapoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/81285220127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1260/2049/files/37748264175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8940/5126/files/32667094487.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/temporal_convolutional_networks.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/hot_wheels_treasure_hunt_price_guide_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/28020356312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/7359/9156/files/51545450668.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/22768578830.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/44702156048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c79d6751-7c4c-43fe-8784-c7f4d76b7011/vidaputemitov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2478/7867/files/kumon_math_worksheets_addition.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_off00007594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7594 5288 bytes
SHA-256: b7c941915ca7f37c804b0f3c8308297fad575489c09ce7f5f4c64fec62dc7663
font_01_sfnt_off0000877b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877B 10636 bytes
SHA-256: f4f710694c0f5763e33cffc3ca80a5cbee9cb20b3c08677952fe6f92ad1f370b