Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39822de7f041d42…

MALICIOUS

PDF

45.0 KB Created: 2020-08-11 02:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc205f686fac93ee0de6b9c6d2cbe1f2 SHA-1: 0fc1882fc14f63d5c5b6d9c4e6e2007e467141a9 SHA-256: e39822de7f041d426a59b165799895a94fd119359456aa388f36de458f7bf95e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=jurnal+asia+tenggara+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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=jurnal+asia+tenggara+pdf
    • http://files.restorerepairmissionaryoutreach.org/uploads/1/3/1/8/131871970/c0109b73104292.pdf
    • http://pimawiv.moroccoluxurydaytours.com/uploads/1/3/0/8/130874278/xurudanekalisa-lovew-xesaf.pdf
    • http://nudujaba.proactiverisk.com/uploads/1/3/1/0/131071243/8703162.pdf
    • http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.pdf
    • http://nileledir.thecarolann.com/uploads/1/3/0/8/130873851/bumogaxuterakaxori.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/plastic_animation_paper_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/panozij.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/laguwegasubamijofobemi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/bubapixemivoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2325/files/42377890724.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/mai_ho_hero_tera_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/4788/6743/files/buxabutika.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0454/6196/2910/files/discounted_cash_flow_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/25603395727.pdf
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/20320969521.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_off000064d4.bin
59c5b32b203457d81ec1a41d80ad3cf5708fccaaa2ef019b38d14bcef3766327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 4972 bytes
font_01_sfnt_off000075bd.bin
0cedcb658ac1a0654c761d2354367cbc286b4284b560e39a246fa28d706979af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BD 10420 bytes
font_02_sfnt_off0000996e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x996E 4324 bytes

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