Malicious PDF — malware analysis report

Static analysis result for SHA-256 15afab17a57ac018…

MALICIOUS

PDF

37.1 KB Created: 2020-08-19 03:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47ff107dc8f2fb92fed1963d947b3cd8 SHA-1: 133b81c2cb9dbf30243caac3607899294b313194 SHA-256: 15afab17a57ac018985d2128ca74dc6f450bf66c4106717b33aaaf39492e9470
154 Risk Score

Malware Insights

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

The PDF contains embedded links that are identified as malicious redirectors, specifically pointing to 'ttraff.com'. The document body, though partially corrupted, contains text that appears to be a lure for movie downloads, aligning with phishing or malware distribution tactics. The presence of numerous external PDF links, some pointing to potentially malicious infrastructure, further supports this assessment.

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=abhiman+bengali+full+movie++in+hd
    • http://files.missdisaburlytease.com/uploads/1/3/0/7/130775953/2928095.pdf
    • http://files.justactstrategy.com/uploads/1/3/1/6/131606094/nagobiruz_gituzeje_zuwuxima.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7868/8674/files/dobekosegifixadokikejixi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/noviwuvado.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/kuref.pdf
    • https://cdn.shopify.com/s/files/1/0432/1565/0980/files/calendario_biodinamico_2018_espaa_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/acca_f9_revision_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/buck_boost_converter_simulation.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/5411158944.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/47140292369.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/financial_formulas_in_excel.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000466c.bin
c50445097fe860298dec66e2830d31234895f88ca4ddccfd10b262c7ef03a264
pdf-font-stream PDF embedded font (sfnt) at offset 0x466C 5236 bytes
font_01_sfnt_off00005819.bin
e4028ffbd88f69cfca102086c7f6f78ef848ca5028329ea167839cc97beadc32
pdf-font-stream PDF embedded font (sfnt) at offset 0x5819 4584 bytes
font_02_sfnt_off000066e5.bin
a7d27dd933451e3d8dabb358ac088fdf11e083cb568bff191b1b854c729110e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E5 9564 bytes