Malicious PDF — malware analysis report

Static analysis result for SHA-256 488b7dcbd5f5c042…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 09:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 81689b81c96ade3a406bc305e49e1b74 SHA-1: 37533b13eb9051dbfb7578ccbf0ef8250beb3e30 SHA-256: 488b7dcbd5f5c0421c34cef705b6bb4f07f7266cffbaf9ddc7f9b7799c4ecf0d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a significant number of embedded links, a common tactic for phishing or malware distribution. One of the primary links directs to a redirector service, ttraff.cc, which is often used to obscure malicious destinations. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute malicious content through numerous seemingly benign-looking links.

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=bottomsheetdialogfragment+max+height In PDF document text
    • http://vogene.siblingarts.net/uploads/1/3/1/1/131164159/fowudesodakuvu_laluvugelofobes_liruwi_lepazotamewasof.pdfIn PDF document text
    • http://zikuled.inspiredlearningproject.com/uploads/1/3/1/4/131438500/bivafogixomiweli.pdfIn PDF document text
    • http://files.signsanddesignsbysabrina.com/uploads/1/3/1/3/131379680/xuvodo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1053/files/super_mario_bros_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/what_happened_to_kissanime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/zaxavitabesefutidupepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1391/2222/files/glint_s_legacy_mastery_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/77955728220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/15691136673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/remezupumosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1054/6071/files/chemical_bonding_polarity_worksheet_5_answers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD3 5440 bytes
SHA-256: 166407f3e9ae25dde0150601ecca1003090f333d4d0a7393c827969de8fa3d95
font_01_sfnt_off00007d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 10356 bytes
SHA-256: 78d0df15ad47c81df72a0c3232698faf1586d9cfd820798dde4194b3d9dd2977

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