Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b339a789d85ce7…

MALICIOUS

PDF

51.2 KB Created: 2020-08-08 11:35:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c827feb5c515ccee44a8d7590d8dfbcb SHA-1: b0531fa9ddd90a65c58f6db3cb043a57f9ea7519 SHA-256: 29b339a789d85ce7c3e079810e7cc2d28bbdff78c41832e1d8801ffa29921d56
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=branches+of+soil+science+pdf'. Another critical heuristic indicated a large PDF link farm, with many links pointing to shopify.com domains, suggesting an attempt to manipulate search engine results or distribute content. The document body contains garbled text and embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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=branches+of+soil+science+pdf
    • http://files.thebarnatheritagefarm.com/uploads/1/3/0/9/130969742/mafinerum-tizevebupug.pdf
    • http://files.bootmama.com/uploads/1/3/2/3/132302764/doruso.pdf
    • http://files.libertymerchandise.org/uploads/1/3/1/3/131380305/nulasifufetor.pdf
    • http://pugokoso.livingourpotential.org/uploads/1/3/0/8/130873851/6991988.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/tujinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/htaccess_cache-_control.pdf
    • https://cdn.shopify.com/s/files/1/0431/7334/7488/files/49427395896.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/operation_of_cathode_ray_tube.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/bodusom.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/24092493061.pdf
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/elastic_collision_in_two_dimension_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/50600954130.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/one_minute_manager_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/7211/1260/files/lodabinajategapurupuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/identifying_limiting_and_descriptive_adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/genituje.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e14.bin
c7f944a8e689e207eae1dab5ac9fac036fb166b3d5b81dec3da94c2db50ddc22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E14 5000 bytes
font_01_sfnt_off00008ef8.bin
a4c2277f5ac686995214d4114290665c2b4a1d490c4f3d4f99d98318d42f2e25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 10272 bytes
font_02_sfnt_off0000b201.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB201 4324 bytes

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