Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ecc45a9a5a4ec1…

MALICIOUS

PDF

37.4 KB Created: 2020-08-27 23:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38d25c1c615aa5b1ac98a7bf8cd9b140 SHA-1: 0ab735bac376936ec4f88e024f73def0c35438dd SHA-256: d6ecc45a9a5a4ec1f4d02284497e4871ebbf30c449c2ca05aad57cf747f70ce8
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a 'Haynes repair manual 1996 Ford Ranger', suggesting a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=haynes+repair+manual+1996+ford+ranger, which likely redirects to further malicious content.

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.cc/pify?keyword=haynes+repair+manual+1996+ford+ranger
    • http://files.bayleighscloset.co/uploads/1/3/1/6/131607331/garivabof_bozuzivezu_zawogup.pdf
    • http://files.racechase.org/uploads/1/3/1/3/131381428/a590d342.pdf
    • http://pevapapa.smartrevivemobile.com/uploads/1/3/2/8/132814930/simadixod-turakute.pdf
    • http://files.metalrescue.co.uk/uploads/1/3/1/6/131607600/b4c7fa7691281d.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/pewasemorojesikobupitona.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/tewasitumigenirabunum.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/kezuzedodipovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/article_370_essay_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/2171/3060/files/kinematics_equations_of_motion.pdf
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/39638172679.pdf
    • https://cdn.shopify.com/s/files/1/0437/6857/8210/files/game_nhp_vai_offline_android_hay_nht.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/wodopisina.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/suzesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/jay_z_4_44_zippyshare.pdf
    • https://cdn.shopify.com/s/files/1/0447/1380/3932/files/20881984659.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000524c.bin
7ca6985e9800204917a2490e2d1b7a4afc51ae78d380edbe6efecc6bbe1292f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x524C 5784 bytes
font_01_sfnt_off000065ed.bin
ab7eb1fb3ea473f5159e8b598972f67c5de4d6e921321879aa6ee0b6068791e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 10508 bytes