Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecab5f1a491248ce…

MALICIOUS

PDF

51.8 KB Created: 2020-08-20 13:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdac1847caad0850fce949478b98bd56 SHA-1: 6df82239af77074ee077dea6083883e315561d8a SHA-256: ecab5f1a491248cec5639c3ee252c55b98d972569a6dd0e0a33023d45804edbd
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, alongside a keyword suggesting a lure for downloading an application. The PDF also exhibits characteristics of a link farm, with numerous embedded links, including one to 'cdn.shopify.com' which is likely part of the infrastructure to host further malicious content.

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=unduh+apk+camera+360+lite
    • http://duwemogeg.brandywinevalleyquilters.org/uploads/1/3/1/3/131398097/dc9201.pdf
    • http://lofodabi.a2consultation.com/uploads/1/3/1/3/131383483/6a2c5d202d.pdf
    • http://files.nancyfreemanstudio.com/uploads/1/3/0/8/130874691/pituxevi-vavilivudevusun.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/rodaxis.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1484/files/kindergarten_sight_words_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/delunupupe.pdf
    • https://cdn.shopify.com/s/files/1/0447/9270/9271/files/guardian_quick_crossword_15360_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/31847878159.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/92495772248.pdf
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/ranch_king_mower.pdf
    • https://cdn.shopify.com/s/files/1/0428/1984/6311/files/44845926498.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/air_water_soil_and_noise_pollution.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/69745101433.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_off000066c4.bin
cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 2952 bytes
font_01_sfnt_off00007153.bin
0ee8f856c5e148bc8e1712eaa4111f7b829e532d983e3fbc47ae44d14b8060d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7153 5652 bytes
font_02_sfnt_off0000844f.bin
d8f97d497f10b0b3cc023c410c504f3a569461c3c18f3b154f3d7f39d5407742		 pdf-font-stream PDF embedded font (sfnt) at offset 0x844F 14916 bytes
font_03_sfnt_off0000acf9.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACF9 16060 bytes

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