Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9579b0b456183b3…

MALICIOUS

PDF

76.3 KB Created: 2020-08-10 04:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2687914eb258a623f8e88312ea46bbd3 SHA-1: 16d00445a94c8cc17cd5e4127f53288f9b73dc63 SHA-256: e9579b0b456183b3c366995e2fb7489d8da2713fd54263295cbddee225a96619
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a report. The document body, though heavily obfuscated, contains text related to "Berger paints annual report 2020" and the malicious URL. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of generated links, suggesting a phishing or scam campaign.

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.com/pify?keyword=berger+paints+annual+report+2020+18+pdf
    • http://files.chris-elliott.co.uk/uploads/1/3/0/7/130739871/fakekekovuro.pdf
    • http://files.lefthandedgolfaustralia.com/uploads/1/3/1/8/131871558/e3f646fe.pdf
    • http://files.acleanerdish.com/uploads/1/3/2/8/132814552/6804552.pdf
    • http://files.becomingsarh.com/uploads/1/3/0/7/130739567/3400932.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4348/files/xinatuvamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/15283376823.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/wojexorulojibepetorigolep.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/65083866261.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/xuminufunexulunejimop.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7472/files/jorinugujomemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/watching_free_movies_on_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/63300153741.pdf
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/unturned_econ_ticket_failed_verification.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe3.bin
0afac77c5ed827c4b948d20e370828a135bd333f7e2baf7608cb4dc2d0b75fbb
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE3 5780 bytes
font_01_sfnt_off0000dfa3.bin
f86da5ac57aa11516bee3e4b9c21fa822e9f4e968764b267275a9d24a9983c27
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 15048 bytes
font_02_sfnt_off00010edb.bin
4111154e076100b82c15878e86323e11c180b5a01e43f9a7d572491bd9fbd500
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EDB 16068 bytes