Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd750354f3220a87…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 19:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a89a7d17dfa72a7030db9f077b633186 SHA-1: a207513af68a7ea0b34b556fee73d6d7dd586ff4 SHA-256: fd750354f3220a87d4beecb896d9ae5b4423e7941be72ce9a0edcfb85bf5fc29
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though partially corrupted, includes the phrase 'how to steam mods on mac', suggesting a lure to attract users to click on these links. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=how+to++steam+mods+on+mac
    • http://files.jemun.net/uploads/1/3/1/4/131437538/zimef-pafitakimu-kazuwapofi-xefulogekasa.pdf
    • http://files.millhillarts.com/uploads/1/3/1/1/131164567/lizaxojuvuvogasaduke.pdf
    • http://files.teigandraigcollection.com/uploads/1/3/0/7/130740073/a56a960c2.pdf
    • http://files.absoluteunderstanding.org/uploads/1/3/2/7/132740375/mupovopoxame.pdf
    • http://romexi.byyoursidepet.com/uploads/1/3/0/7/130776795/daxuvotaremo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/88053585115.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/adobe_converter_cost.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/huggies_wipes_glass_shards.pdf
    • https://cdn.shopify.com/s/files/1/0435/7265/8335/files/logical_formulas_in_excel_2020_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/edit_text_in_indesign.pdf
    • https://cdn.shopify.com/s/files/1/0435/5021/2264/files/nj_fishing_reports_raritan_bay.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/23779293113.pdf
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/nonagutuvakux.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/34991252718.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/kuvedulibapajofimejopovos.pdf
    • https://cdn.shopify.com/s/files/1/0435/8746/9471/files/30249804822.pdf
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/jasivuzita.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/xozitadopijupijovede.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005977.bin
c84843db43204830bb133e9da7d4148d7d46f6f6feb81cd00a0344880e98581c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5977 4748 bytes
font_01_sfnt_off0000698a.bin
c4638b5a5cd825697d10312c04445cefbb6d5e97d82ec4f7cf4dc46330b2ea67
pdf-font-stream PDF embedded font (sfnt) at offset 0x698A 9792 bytes
font_02_sfnt_off00008b0e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 4324 bytes