Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9b8fe7bed4142a…

MALICIOUS

PDF

37.6 KB Created: 2020-08-28 11:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cae56e78567fd5a316a2f9336448dbaf SHA-1: 9b9eb17c9cfa363124198c05e5acd7e475c5bafd SHA-256: 2f9b8fe7bed4142a9370f4fa7c6fcb775b520b87a874fec1d9e46c8d71f403f6
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially garbled, suggests a lure related to GPS tracker updates. The primary malicious URL, https://ttraff.ru/pify?keyword=atualiza%25C3%25A7%25C3%25A3o+gps+multilaser+tracker+t, is the most critical IOC, likely serving as a gateway 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.ru/pify?keyword=atualiza%25C3%25A7%25C3%25A3o+gps+multilaser+tracker+t
    • http://files.conniecycling.com/uploads/1/3/1/3/131380612/df3d54bf53f6.pdf
    • http://nupawe.realtermsdogtraining.com/uploads/1/3/0/7/130776486/8ede65816767.pdf
    • http://files.ccumc.us/uploads/1/3/1/4/131406448/mowaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2268/files/30902120252.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/gibilakeralabuximud.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/prevnar_cdc_vis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/livro_de_melquisedeque.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3396/files/free_printable_addition_math_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/89330546725.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/livafowepe.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/88830097030.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/observatory_quest_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/surizazoresojukojog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/bergamota_doterra_espaol.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_off00004e75.bin
fdc434f922b167a7332f68f0803079e8d133446b4c1eb544cb778be9789d40d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E75 5856 bytes
font_01_sfnt_off00006177.bin
f2fc1428028789e2f90e97b74e0bce0229961c1d259dd6fb5f797311f00afd87
pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 12308 bytes