Malicious PDF — malware analysis report

Static analysis result for SHA-256 48faab3d5d18a372…

MALICIOUS

PDF

52.7 KB Created: 2020-08-16 22:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfc704d7476fab10867d50f2b9e1fb46 SHA-1: da6f541ab4c8540dbf9c3e749ac1ce71aeeaca5c SHA-256: 48faab3d5d18a37245f926e2632f3b7ae790446514df7f49e7182177503de18d
154 Risk Score

Malware Insights

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

The PDF contains a lure related to 'ff14 botanist gear guide' which redirects to a malicious URL. The PDF also functions as a link farm, containing numerous external links, many of which point to Shopify domains. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL confirms a phishing or redirection attack.

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=ff14+botanist+gear+guide
    • http://mesedi.in2yogalapeer.com/uploads/1/3/2/6/132681495/deduzera.pdf
    • http://files.wholereflections.com/uploads/1/3/1/0/131070674/5650600.pdf
    • https://cdn.shopify.com/s/files/1/0450/3745/3470/files/aciclovir_dosis_herpes_labial.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/82705036799.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/zubodokaweb.pdf
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/76850930051.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4022/files/bonus_act_amendment_2020_gazette_notification.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdf
    • https://cdn.shopify.com/s/files/1/0435/6685/8408/files/symbolic_atoms_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1125/files/98180887974.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9880/files/2189060048.pdf
    • https://cdn.shopify.com/s/files/1/0431/1003/9719/files/vadasapifirenixowuxumef.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/
    • https://cdn.shopify.com/s/files/1/0432/2865/98

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009054.bin
af3b394cda9b1ef9e9e7cebdbcab3b7fc6d2350a4c1c0d98137fe67bc2e48156
pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 5276 bytes
font_01_sfnt_off0000a256.bin
ebf8888b25ffd55c32ae90088c939b6881be0e24d0ce541f34b5fad3e2edf28b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA256 10524 bytes