Malicious PDF — malware analysis report

Static analysis result for SHA-256 9594571f199c346a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 06:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f6c16e34589d6bb32c65d94bc37256b SHA-1: e2cbdf6b3effe8e9895cb32e1ce7fdae61a48600 SHA-256: 9594571f199c346a9659de912a163294c96239601bc4ecf9dda4d4d8f85d1cbe
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though partially corrupted, also contains this URL and references bypassing iCloud lock, indicating a phishing or scam lure. The presence of numerous other PDF links, many hosted on cdn.shopify.com, suggests a link farm used to distribute malicious content or improve SEO for scam pages.

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=bypass+icloud+lock+iphone+5+free
    • http://fivuxebo.americuspregnancy.org/uploads/1/3/1/4/131482976/d475ab.pdf
    • http://files.massagemattersbynancy.com/uploads/1/3/2/6/132681033/9160655.pdf
    • http://nafatuma.jennycoffeycounseling.com/uploads/1/3/2/7/132710714/92081.pdf
    • http://files.cedarharborwi.com/uploads/1/3/2/8/132814589/9627553.pdf
    • http://files.electhicks.com/uploads/1/3/1/4/131407067/nubiwok.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7404/files/ragufadikowof.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/22047053831.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/jitanexatulenaritufexano.pdf
    • https://cdn.shopify.com/s/files/1/0429/7405/2503/files/wobuperuzazebobi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70474217151.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8454/files/candy_camera_apk_2019.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/tolokufosazase.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/beatles_yesterday_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdf
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/biological_science_1_and_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/loditobubug.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_off00006a46.bin
19fbd44aa843a6830ef86321a06d7f58a60f2831a4bb8b34208e3c9c519acb44
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 5584 bytes
font_01_sfnt_off00007d34.bin
0edea4d70e9d1d36c8e2b2056a7f9da812a4c475761ca49d45b70a2916387ff2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 10156 bytes