Malicious PDF — malware analysis report

Static analysis result for SHA-256 222f21995d03de10…

MALICIOUS

PDF

60.4 KB Created: 2020-08-10 02:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ad5aa93c7dbb249a527bec1c4d75e46 SHA-1: 2db55c997cfa67d34cbc6563ae58748c5c89beb9 SHA-256: 222f21995d03de10c1ebd0f4ec06499da97804b9cfbbe212044327d1f784e165
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One of these URLs, 'https://ttraff.ru/pify?keyword=buddhahood+in+this+life+pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The presence of a link farm suggests an attempt to obscure the final malicious destination and potentially engage in SEO poisoning to lure unsuspecting users.

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.ru/pify?keyword=buddhahood+in+this+life+pdf
    • http://files.calwhales.org/uploads/1/3/1/6/131607575/xibikasosabaluk.pdf
    • http://files.plumislandweavingco.com/uploads/1/3/2/6/132695574/wazokejozuduw.pdf
    • http://files.ivyheightschurch.org/uploads/1/3/1/4/131437174/vilij.pdf
    • http://files.nomomani.com/uploads/1/3/1/4/131453136/fepopokozudaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7409/files/gejala_atonia_uteri.pdf
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/jebezenofisusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3274/7927/files/1627365252.pdf
    • https://cdn.shopify.com/s/files/1/0432/3970/2687/files/94110187928.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/kagavabakubojesuzibaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/9204/0097/files/savaduxajaj.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/reading_comprehension_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0452/3019/4845/files/rules_for_assigning_oxidation_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0432/4501/1112/files/40338363983.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/83094641626.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4844/files/anamnesis_anak.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/mesotamikude.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/1/0430/7307/7409/files/gejala_at

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afd1.bin
2e6de55ef468b61b2bcc9b69a0edce51652340fba0fbb90f499162b607cafcaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD1 5080 bytes
font_01_sfnt_off0000c11d.bin
5581ebcc9dd71677fed8f8e3ec0db51a0c39212a4147cb1c702bf4821bfd0bc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC11D 10352 bytes

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