Malicious PDF — malware analysis report

Static analysis result for SHA-256 80de26851aedb57b…

MALICIOUS

PDF

43.3 KB Created: 2020-08-22 19:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdb37de53635a4471644b216e66f6b08 SHA-1: e9775c70b07bce9e1b9df3c3a68dc67904bed40d SHA-256: 80de26851aedb57bef0aead6f644f69d42165e9f4679e02af282bc49f0acd7e7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body contains text related to 'Cod mobile icon' and appears to be a lure, with the primary malicious activity being the distribution of numerous links.

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.cc/pify?keyword=cod+mobile+icon
    • http://tejezes.kaptive8sports.com/uploads/1/3/1/3/131398020/7581083.pdf
    • http://files.abundantblessingweddingofficiant.com/uploads/1/3/1/4/131438891/rogasevapivumoj.pdf
    • http://files.stephaniejoycecole.com/uploads/1/3/0/7/130775747/8536209.pdf
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/simple_present_past_future_tense_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5242/files/4162044296.pdf
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/75267715972.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/algebra_booleana_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0429/2611/2927/files/character_traits_list_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/sebuvugosuvoto.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/nsk_bearing_housing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0994/files/work_rules_book_summary.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/zisasegomiwegin.pdf
    • https://cdn.shopify.com/s/files/1/0437/9977/3341/files/transformer_un_garage_en_atelier_d_artiste.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5059/files/racially_aggravated_criminal_damage_sentencing_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/79296384342.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4716/files/70016510813.pdf
    • https://cdn.shopify.com/s/files/1/0432/2322/0392/files/asbog_exam_secrets_study_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b7d.bin
40f6df8733d32be9a220af6ee37d0b234291ac712dd2b523192c9663603d49b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7D 4648 bytes
font_01_sfnt_off00007b39.bin
fbf9e9e486675d8f8b64a71a2311f28050823dc4e4156bbe850c85989ace1ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B39 11036 bytes

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