Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd68abe2a5bf5490…

MALICIOUS

PDF

49.5 KB Created: 2020-08-24 19:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eea28228360a9963e54def24d2724a28 SHA-1: a9cf637702d46eec7f7f5f8ac4abeb4069cb6532 SHA-256: dd68abe2a5bf5490937384fe2931a31c311816ec26d093c2ad1f0b5a2f1fe38e
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, masquerading as a download for a "hack wifi id apk". This is further supported by heuristics indicating a malicious redirector link and a PDF link farm. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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=hack+wifi+id+apk
    • http://mosomipo.magerbino.com/uploads/1/3/1/0/131071278/1681055.pdf
    • http://files.triplechomestead.net/uploads/1/3/0/7/130739379/fizijugel.pdf
    • http://files.hopsandhollers.shop/uploads/1/3/0/9/130969172/1836912.pdf
    • http://files.photodsbrady.com/uploads/1/3/1/1/131164479/joxidovadu-nivejibex-lufidolofe.pdf
    • http://files.trixwithay.com/uploads/1/3/0/9/130968996/xelam-xetotopigegesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/5696276629.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/ropulufaxufubosiz.pdf
    • https://cdn.shopify.com/s/files/1/0449/8613/8792/files/idh_angola.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/transformer_polarization_index_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/ind_safety_reporting_ba_be.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9763/files/testify_to_love_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/vesobajepolaminuleke.pdf
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/bertolt_brecht_vita_di_galileo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/88959557718.pdf
    • https://cdn.shopify.com/s/files/1/0460/3189/6740/files/2018_chevy_colorado_diesel_owners_manual.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_off00008427.bin
75d57b97ae2110b70962aaf6dcd0cb35df01cfac466c35a427c1d21e82900361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8427 4960 bytes
font_01_sfnt_off0000952c.bin
3cd488c93e89d2041a20a4d4c4f3b122daf8dc9212e181cfa0b886b2e6c7991b
pdf-font-stream PDF embedded font (sfnt) at offset 0x952C 10684 bytes