Malicious PDF — malware analysis report

Static analysis result for SHA-256 907705a1b606e0fc…

MALICIOUS

PDF

41.5 KB Created: 2020-08-03 06:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce3fd6a9d3f64e8b884cb7c9c133ffbc SHA-1: c4a08261e5b43bcbe9e02545cc18e38350ac9a8b SHA-256: 907705a1b606e0fcf85a03ca332e92405934ffff381604190d084048ecb58234
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document body itself is heavily obfuscated but contains the same malicious URL, suggesting a deliberate attempt to trick users into clicking it. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for 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.com/pify?keyword=disney+customer+service+training+manual+pdf
    • http://files.mrsnahonsartroom.com/uploads/1/3/0/8/130874691/zelaxax.pdf
    • http://files.virtus.hu/uploads/1/3/1/4/131407423/jukajepelosiw-baviresaf-volozuxavajoru.pdf
    • http://files.mysonnyrae.com/uploads/1/3/1/4/131455621/kolukam_debovok_xunejukofujape_dumusuw.pdf
    • http://files.vrarqueen.com/uploads/1/3/2/7/132712209/jujepezojobanere.pdf
    • http://files.vegsense.net/uploads/1/3/1/4/131437376/rinulusojepibok-koxol-nunowavije-pagezosab.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/12833577377.pdf
    • https://cdn.shopify.com/s/files/1/0437/7667/1895/files/gumolibubipadozevibiwuri.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/moboximopikexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/90078003719.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/nigonixobuzisofasonexowo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/vafajanuwawibeze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/mibitodajuki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijovosulodomozov.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/84297247595.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/23383813926.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_off00006390.bin
2cc562b5cfb709fbfdddf1d90d9554fb7818d2f468843bf372ec716e01450f04
pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 5636 bytes
font_01_sfnt_off000076bd.bin
5ea1785160c4f5d54cce3a862b60801d42d76d428088628c2a34bdc95e17680e
pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 10028 bytes