Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56f8287215c6d09…

MALICIOUS

PDF

50.4 KB Created: 2020-08-24 06:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19c7798c7610c37a1d52314d7a518f13 SHA-1: 10884fee35727e505229aefc642be2107b3f5f71 SHA-256: a56f8287215c6d096fb519677ccff5955f533d6d294d3e1931bf33fe58b8ba64
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One of the primary links, 'https://ttraff.cc/pify?keyword=ten+abbas+kiarostami', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but also includes the malicious redirector URL and a benign-looking PDF URL, likely part of the link farm.

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=ten+abbas+kiarostami
    • http://files.annjamescounseling.com/uploads/1/3/1/6/131636814/ea4f803d26ce.pdf
    • http://files.rpdk9history.com/uploads/1/3/0/8/130813979/bison.pdf
    • http://files.jenniferwyatt.ca/uploads/1/3/0/7/130776393/zasupezetijalofan.pdf
    • http://rutopeka.concierge-maps.com/uploads/1/3/1/4/131407226/8219907.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/xorixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/diagnostico_de_neuralgia_del_trigemino.pdf
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/pubog.pdf
    • https://cdn.shopify.com/s/files/1/0435/2504/6431/files/amcor_sustainability_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0437/8224/2466/files/66002928186.pdf
    • https://cdn.shopify.com/s/files/1/0437/2289/9608/files/first_aid_guide_vanilla_1-_300.pdf
    • https://cdn.shopify.com/s/files/1/0438/1828/7266/files/kidifigubemoguv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/24758848441.pdf
    • https://cdn.shopify.com/s/files/1/0432/8295/6443/files/tuxibikegukarabajokesus.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/giwinezarire.pdf
    • https://cdn.shopify.com/s/files/1/0432/6106/7427/files/bergeret_psychologie_pathologique.pdf
    • https://cdn.shopify.com/s/files/1/0430/2598/9785/files/sijafadisuremimiwej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.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_off0000726f.bin
1c3ca4d4c4d825a72ecde56a71ab21063ea64fe34a80f94d8467f630fe92afef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726F 4952 bytes
font_01_sfnt_off00008336.bin
f5fa0549dab2f9499fa33c7c6cc051fd3fb98ca665d628ecd80cb005fe6d87f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8336 10440 bytes
font_02_sfnt_off0000a73f.bin
f545c4785ce2f2c3eb601e0db430a66272274619fece29705a9286469669bf61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA73F 16232 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.