Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d72b580769c395…

MALICIOUS

PDF

75.1 KB Created: 2020-08-08 03:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d823cbcdcce1dc784b14735b953c29b SHA-1: a92309c920bb0b5207e9ac71c412259be9fe5c4e SHA-256: 10d72b580769c3954415efdf46db5bb00bdc116f05545e616926392dabd5e033
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains lures for advance-fee scams and fake invoices, indicating a phishing or fraud attempt. It embeds numerous links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=contract+signature+page+pdf', which is likely used to deliver a secondary payload or redirect the user to a fraudulent site. The presence of embedded URLs and the overall structure suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=contract+signature+page+pdf
    • http://geposujux.harmonygroveenglishshepherds.com/uploads/1/3/0/8/130814124/pegobagenabezexetef.pdf
    • http://files.makeacrane.com/uploads/1/3/1/6/131637325/jijajo.pdf
    • http://files.michaelfarisart.com/uploads/1/3/0/8/130874593/tuviles.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/1603/6262/files/kizelixijav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/2109644595.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/68006819060.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/vavuzixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/94100923213.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/tivuganapobazawu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23651487672.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/negetogalidawosu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/56509121089.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/xesumupovexozisolore.pdf
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/tujepemabudidede.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/wanuwewatabod.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6295/files/starting_out_with_java.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d13c.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD13C 2828 bytes
font_01_sfnt_off0000db36.bin
b8847d1e567bd671850ff38dcc91a12bd003127aaa6d1760b0213e19ada68714		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB36 5196 bytes
font_02_sfnt_off0000ece9.bin
de121db7a0ccccea07b58c23f5eade167ca82a58b39db2156285dea1a8f8a261		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE9 9932 bytes
font_03_sfnt_off00010ecb.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECB 4324 bytes

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