Malicious PDF — malware analysis report

Static analysis result for SHA-256 c035291c2c516c74…

MALICIOUS

PDF

41.8 KB Created: 2020-08-22 05:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a89332f8bf3a3e28168646ae7f24efe9 SHA-1: f9d575de117c598b3537812d5408fe05ee865fd3 SHA-256: c035291c2c516c7491d4f8510b6b759b1dbce17d7a8c86fa531977bc1d99ee47
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign content on Shopify, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL for the malicious redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=avira+antivirus+for+pc
    • http://files.bawathitchurch.net/uploads/1/3/1/8/131857756/2517217.pdf
    • http://pugeporu.rallytheatrecompany.com/uploads/1/3/2/8/132814930/tujusuwowose-zipumitawe-rogupokojijonun.pdf
    • http://dokepu.sungindustries.com/uploads/1/3/0/7/130738730/tudimepik_serogori_sazumelafinene_loxip.pdf
    • http://dutano.patrickhanks.com/uploads/1/3/0/7/130775214/jevisa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/china_s_belt_and_road_initiative_five_years_later.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibuzos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/plague_inc_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/magnovox_universal_remote.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/gezugawukuret.pdf
    • https://cdn.shopify.com/s/files/1/0430/4984/4890/files/rewuzod.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/wodutupukaxonamuxaxode.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/nevebogeboroximunonob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/divutumigaxefopabivu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/45620161263.pdf
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/console_command_to_go_to_dark_room.pdf
    • https://cdn.shopify.com/s/files/1/0451/4234/3833/files/vegetarianism_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/13033309130.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_off0000674c.bin
e889d0970ec171703f18e7d007d3f2e60fd286ae82821b8854649e9f2ebdb031
pdf-font-stream PDF embedded font (sfnt) at offset 0x674C 5024 bytes
font_01_sfnt_off00007875.bin
85c0f7ce47119b3e81db3da6bb755fb4fa79849bc869ba845650b11e610daf31
pdf-font-stream PDF embedded font (sfnt) at offset 0x7875 9960 bytes