Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d80ee093e7bb4f6…

MALICIOUS

PDF

49.8 KB Created: 2020-08-10 09:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f6bfd4997ad02679af98c420f77ea8d SHA-1: 786e0f3bc1eccd91381a4d57de7eef7404dbe37d SHA-256: 1d80ee093e7bb4f6620a32530cee03630d5e200008be2a83adc9407094b8fb19
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding a large number of URLs, many of which are hosted on cdn.shopify.com and appear to be SEO-optimized. One of the embedded links, 'https://ttraff.cc/pify?keyword=scout+campfire+songs+pdf', is identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence, suggesting malicious intent.

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.cc/pify?keyword=scout+campfire+songs+pdf
    • http://files.meaganedgar.com/uploads/1/3/1/6/131606094/02ea19cf3.pdf
    • http://files.faithinhisblood.org/uploads/1/3/1/8/131871568/jibelejirizuja.pdf
    • http://files.preppedandprimped.com/uploads/1/3/0/7/130775678/zuvurogatatese_wotalasale.pdf
    • http://files.midcoastfitness.com/uploads/1/3/0/8/130874360/4748124.pdf
    • http://files.kingdompower.org/uploads/1/3/1/6/131606666/xugipu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/muslim_boy_names_meaning_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/vokumuxuposimowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/28148062701.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8917/files/29345285989.pdf
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/welarebigeza.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/zedadexidedekenob.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/89907221528.pdf
    • https://cdn.shopify.com/s/files/1/0451/7101/5829/files/pijoluzatapadorolaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/jewiwujosiledolexidi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5849/5639/files/88441255757.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/84964294544.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/elective_maths_syllabus_for_shs.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_off000084e2.bin
e7c4b64264a4022b8a888f0b5c29cdcc26e9739a48e3b979593f44887798dd3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E2 5544 bytes
font_01_sfnt_off000097a7.bin
ed92e6ee71eb9debe4a5b765d52535dce7a17a069a02f5a591fa9cc2564a5480
pdf-font-stream PDF embedded font (sfnt) at offset 0x97A7 10120 bytes