Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed3fc240bf0952a…

MALICIOUS

PDF

54.0 KB Created: 2020-08-25 00:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcf9a6b1d6cba1416dbe7e4c12acefd5 SHA-1: e9b2795f05b096a81a9109f606b0a731af74b5ee SHA-256: fed3fc240bf0952a7641852d6c320ecc2872620fdcd2561fa6b548d437104a8a
152 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. It also features a large number of embedded links to other PDF files hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.com/pify?keyword=dream+girl+movie++sdmoviespoint.

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.com/pify?keyword=dream+girl+movie++sdmoviespoint
    • http://files.toddhanger.com/uploads/1/3/0/7/130775734/8973070.pdf
    • https://cdn.shopify.com/s/files/1/0436/7115/8949/files/sagugiruk.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/jufuruxekavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/taviwapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/70728235541.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/95647759193.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/labour_law_amendment_bill_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/wawis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/apsara_aali_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/cambridge_listening_b2.pdf
    • https://cdn.shopify.com/s/files/1/0438/0491/7917/files/accidentes_de_transito_en_el_peru_2020.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070ea.bin
251abc228df329c0370b93096a286a047b0948e9b6ee14bc7884fc3773e3a741
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EA 5124 bytes
font_01_sfnt_off00008248.bin
ac9ee954095772939fd3a6b3e46714652e69b114e7553937c9a027d6b1e7b67a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8248 10960 bytes
font_02_sfnt_off0000a7b0.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B0 16164 bytes
font_03_sfnt_off0000bcc8.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC8 4324 bytes