Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b3470221d17063…

MALICIOUS

PDF

58.2 KB Created: 2020-08-13 03:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c82b8b80343c927b1a1b6e9f7e5b3843 SHA-1: 08f533c42ab33f47619fde46fdbc2af3576c5f83 SHA-256: 80b3470221d170636da5296da30b9892fb1819038807ef0e71d08a6ed226961c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body also contains a URL that leads to this malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or to download further malware. The ML classifier strongly indicated maliciousness.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=al+quran+taj+company+pdf
    • http://buzumu.sleepschool.com/uploads/1/3/0/9/130969356/bb12aa305d19d.pdf
    • http://files.iluvmemore.com/uploads/1/3/2/3/132302815/ea158.pdf
    • http://files.pathoflightchurch.org/uploads/1/3/2/6/132681307/modop-zotovijan-pugojixu-sesanasozevuvu.pdf
    • http://files.habbosia.info/uploads/1/3/1/4/131437889/bajopedalisatobesa.pdf
    • http://nemalinos.francisweller.net/uploads/1/3/1/4/131454526/jenoj_gozifexisomo_samusol_vimaxarufes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/because_someone_i_love_has_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/dodijefatijavikulifolu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/digestive_system_worksheet_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/jikimifajalor.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/74712764253.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/bilingual_picture_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0440/7004/3813/files/21244294873.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/28652038430.pdf
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/netobizapefulogojaxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/74499535628.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/35793768347.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/rutebedexigot.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099c2.bin
a8143ffc9844b37274c697a09bc369a10670c7e14e4e0715b2c808897381e0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99C2 5416 bytes
font_01_sfnt_off0000ac21.bin
b1b25b51f3c7bcf96833f526db06c790e887590d8cfdeac1a906a656b045cb0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC21 15372 bytes

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