Malicious PDF — malware analysis report

Static analysis result for SHA-256 80beef1425c7f445…

MALICIOUS

PDF

79.8 KB Created: 2020-09-08 11:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977f68adbe3c9e9fe72da337923e4d6b SHA-1: 96b892c06578e0a3d714d5cdb1fda3ebb563567c SHA-256: 80beef1425c7f445240170bcd6835fad17460af6c92227fec8e4494a76d7ad0e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with a redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for financial forms. The presence of a password-protected archive lure heuristic suggests the document is intended to facilitate the download of a malicious payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/wix?keyword=aditya+birla+mutual+fund+nomination+form
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/38645478846.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/fimomogonosesapagogemet.pdf
    • https://cdn.shopify.com/s/files/1/0459/6318/2247/files/marks_basic_medical_biochemistry_a.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/52408323187.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/armour_of_god_2_tamil_dubbed.pdf
    • https://static.usrfiles.com/ugd/38955b_f354ad82537a46ccaa3a33cbb5d48da0.pdf
    • https://static.usrfiles.com/ugd/270e53_b0cc0bc0f26446bc916271f65b25573b.pdf
    • https://static.usrfiles.com/ugd/5ed537_acbfbb2e4bb442baaac55f3936a1afc5.pdf
    • https://static.usrfiles.com/ugd/035627_123e2420076446e0ae3e9f8465e8ae5a.pdf
    • https://static.usrfiles.com/ugd/9bd82e_a650004c4b624c37a86f13cdb6afb0ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b872d4978ec428f9c84fd9f251eb11b.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/wibiniferedinigoxawokes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/gagironixedaneno.pdf
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/64119209498.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/vuwelulubulaxod.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/zisakipaxetegexixu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3f2.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F2 2828 bytes
font_01_sfnt_off0000fdec.bin
3e7166592116b054e7ba0e03bb62aa43e99de3ed2e2a85d847ad2d5ce6dfe87d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEC 5108 bytes
font_02_sfnt_off00010f3d.bin
1ccb631c908784aa38b8fb809d4db33a04d7d28e4d08223508de4ae9d2e33ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3D 9932 bytes

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