Malicious PDF — malware analysis report

Static analysis result for SHA-256 111c7cb91bbff946…

MALICIOUS

PDF

48.6 KB Created: 2020-08-24 03:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75f8542f2e5c595cb88a3aa4f3aad55e SHA-1: ee1e1a26902954de7a0628bdf7518064fae43cd8 SHA-256: 111c7cb91bbff9468516d35e2745c013db8728752b45be248a1385a1c0cd2e8d
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body and embedded links suggest an attempt to lure users to external sites, potentially for SEO poisoning or phishing, by referencing a movie title. While no scripts were directly extracted, the PDF structure and heuristic firings indicate malicious redirection and link farming behavior.

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=angadi+theru+movie++tamil
    • http://duvefun.andrewandmeghan.com/uploads/1/3/0/7/130775507/rorilifis_tefovav_zugujonito_wapawaxumos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/4475466720.pdf
    • https://cdn.shopify.com/s/files/1/0457/3698/4742/files/guided_sleep_meditation_chakra_tuning.pdf
    • https://cdn.shopify.com/s/files/1/0460/3527/1844/files/informative_report_of_demat_account_methodology.pdf
    • https://cdn.shopify.com/s/files/1/0440/5572/4197/files/robust_nonparametric_statistical_methods.pdf
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/eater_of_worlds_text_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8262/files/37701743613.pdf
    • https://cdn.shopify.com/s/files/1/0434/1789/5070/files/1219033706.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/65516132477.pdf
    • https://cdn.shopify.com/s/files/1/0431/5211/3820/files/37855950854.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/zuxoxigumuvuwu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006be1.bin
647eeb457c21347bea0547a3bc07c89cc5e2ef8654f90fa195263cb76d083963
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 5112 bytes
font_01_sfnt_off00007d16.bin
adab483b4e3d472d370051413ac71bc344dd2055f185bec170a6642d822a39a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D16 10292 bytes
font_02_sfnt_off0000a09c.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA09C 16164 bytes